Accounting Policies [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] MI Acquisitions MI Acquisitions [Member] MI Acquisitions [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] IPO proceeds Proceeds from Issuance of Common Stock Total consideration transferred Business Combination, Consideration Transferred Number of reportable segments Number of Reportable Segments Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] PPS Tech and PPS Northeast Priority Payment Systems Tech Partners And Priority Payment Systems Northeast [Member] Priority Payment Systems Tech Partners And Priority Payment Systems Northeast [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] GS Warrants GS Warrants [Member] GS Warrants [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash paid for cancellation of warrants Payments for Repurchase of Warrants Change in fair value of warrant liability Fair Value Adjustment of Warrants Warrant liability Warrants and Rights Outstanding Contingent consideration Business Combination, Contingent Consideration, Liability Commitments and Contingencies Disclosure [Abstract] Schedule of Future Minimum Lease Commitments Under Non-Cancelable Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Related Party Transactions [Abstract] Expenses from transactions with related party Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party Call-right purchase price Class of Warrant or Right, Exercise Price of Warrants or Rights Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Weighted Average Weighted Average [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Merchant portfolios Service Agreements [Member] Non-compete agreements Noncompete Agreements [Member] Tradename Trade Names [Member] Acquired technology Developed Technology Rights [Member] Customer relationships Customer Relationships [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Useful Life Finite-Lived Intangible Asset, Useful Life Nature of Business and Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Number of parties involved in a contract Number Of Parties Involved In A Consumer Payment Contract Number Of Parties Involved In A Consumer Payment Contract Basis of Presentation and Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Components of Revenues and Expenses and Customer Deposits and Advance Payments Revenue from Contract with Customer [Policy Text Block] Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Cash and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Accounts Receivable Receivables, Policy [Policy Text Block] Allowance for Doubtful Accounts Receivable Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Property and Equipment, Including Leases Property, Plant and Equipment, Policy [Policy Text Block] Costs Incurred to Develop Software for Internal Use Internal Use Software, Policy [Policy Text Block] Settlement Assets and Obligations Contractual Adjustments and Third Party Settlements, Policy [Policy Text Block] Debt Issuance Costs Debt, Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Accrued Residual Commissions Commissions Expense, Policy [Policy Text Block] ISO Deposits and Loss Reserves ISO Deposits And Loss Reserves [Policy Text Block] ISO Deposits And Loss Reserves [Policy Text Block] Equity-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Advertising Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block] Earnings (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Warrant Liability Warrant Liability [Policy Text Block] Warrant Liability [Policy Text Block] New Accounting and Reporting Standards New Accounting Pronouncements, Policy [Policy Text Block] Concentration of Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Equity [Abstract] Common shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common shares authorized (in shares) Common Stock, Shares Authorized Common stock issued (in shares) Common Stock, Shares, Issued Preferred stock authorized (in shares) Preferred Stock, Shares Authorized Preferred stock shares issued (in shares) Preferred Stock, Shares Issued Quarterly Financial Information Disclosure [Abstract] Revenues Revenue from Contract with Customer, Excluding Assessed Tax Operating expenses Operating Expenses Income from operations Operating Income (Loss) Interest expense Interest Expense Other, net Other Nonoperating Income (Expense) Income tax benefit (Note 9) Income Tax Expense (Benefit) Net (loss) income Net Income (Loss) Attributable to Parent Basic and diluted (USD per share) Earnings Per Share, Basic and Diluted Schedule of Goodwill [Table] Schedule of Goodwill [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Consumer Payments Consumer Payments [Member] Consumer Payments [Member] Commercial Payments and Managed Services Commercial Payments And Managed Services [Member] Commercial Payments And Managed Services [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Senior Term Loan, Maturing January 3, 2023 Senior Term Loan, Maturing January 3, 2023 [Member] Senior Term Loan, Maturing January 3, 2023 [Member] Subordinated Term Loan, Maturing July 3, 2023 Subordinated Term Loan, Maturing July 3, 2023 [Member] Subordinated Term Loan, Maturing July 3, 2023 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes Senior Notes [Member] Subordinated Debt Subordinated Debt [Member] Line of Credit Line of Credit [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Payment-in-Kind Interest Rate Payment-In-Kind Interest Rate [Member] Payment-In-Kind Interest Rate Debt Instrument [Line Items] Debt Instrument [Line Items] Applicable margin Debt Instrument, Basis Spread on Variable Rate Actual interest rate Line of Credit Facility, Interest Rate at Period End Total Debt Long-term Debt, Gross Less: current portion of long-term debt Long-term Debt, Current Maturities Less: unamortized debt discounts Debt Instrument, Unamortized Discount Less: deferred financing costs Debt Issuance Costs, Net Total long-term debt Long-term Debt, Excluding Current Maturities Related Party Transactions Related Party Transactions Disclosure [Text Block] GS 1.0% Warrants GS 1.0% Warrants [Member] GS 1.0% Warrants [Member] GS 1.8% Warrants GS 1.8% Warrants [Member] GS 1.8% Warrants [Member] GS 2.2% Warrants GS 2.2% Warrants [Member] GS 2.2% Warrants [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Warrant Liability Warrant [Member] Contingent Consideration Contingent Consideration [Member] Contingent Consideration [Member] Warrants, percentage of outstanding stock available for purchase Class Of Warrant Or Right, Percentage Of Outstanding Stock Available For Purchase Class Of Warrant Or Right, Percentage Of Outstanding Stock Available For Purchase Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Extinguishment Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Issuance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Release and adjustment of contingent consideration (Note 12) Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Release And Adjustment Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Release And Adjustment Adjustment to fair value included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Change in fair value of warrant liability Earnout liabilities arising from business combinations (Note 2) Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Earnout Liabilities From Business Combinations Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Earnout Liabilities From Business Combinations Ending balance Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Finite-lived Intangible Assets Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Settlement Assets and Obligations Settlement Assets And Obligations [Text Block] Settlement Assets And Obligations [Text Block] Statement of Cash Flows [Abstract] Cash Flows From Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net (loss) income Adjustments to reconcile net (loss) income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization of assets Depreciation, Depletion and Amortization Equity-based compensation Share-based Compensation Amortization of debt issuance costs and discount Amortization of Debt Issuance Costs Equity in losses and impairment of unconsolidated entities Income (Loss) from Equity Method Investments Provision for deferred income taxes Deferred Income Tax Expense (Benefit) Change in fair value of warrant liability Change in fair value of contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Payment-in-kind interest Paid-in-Kind Interest Other non-cash charges Other Noncash Expense Change in operating assets and liabilities (net of business combinations): Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Settlement assets Increase (Decrease) In Settlement Assets Increase (Decrease) In Settlement Assets Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Notes receivable Increase (Decrease) in Notes Receivables Accounts payable and other current liabilities Increase (Decrease) In Accounts Payable, Accrued Liabilities And Accrued Sales Commissions Increase (Decrease) In Accounts Payable, Accrued Liabilities And Accrued Sales Commissions Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net Cash Provided By Operating Activities Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisitions of businesses Payments to Acquire Businesses, Net of Cash Acquired Additions to property, equipment, and software Payments to Acquire Property, Plant, and Equipment Acquisitions of merchant portfolios Payments to Acquire Intangible Assets Net Cash Used In Investing Activities Net Cash Provided by (Used in) Investing Activities Cash Flows From Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of long-term debt, net of issue discount Proceeds from Issuance of Long-term Debt Repayments of long-term debt Repayments of Long-term Debt Borrowings under revolving line of credit Proceeds from Lines of Credit Repayments of borrowings under revolving line of credit Repayments of Lines of Credit Debt issuance costs Payments of Debt Issuance Costs Distributions from equity Payments of Dividends Redemptions of equity interests Payments For Redemptions Of Membership Interests Payments For Redemptions Of Membership Interests Recapitalization proceeds Proceeds From Recapitalization Proceeds From Recapitalization Redemption of warrants Recapitalization costs Payments of Stock Issuance Costs Net Provided By (Used In) Financing Activities Net Cash Provided by (Used in) Financing Activities Net change in cash and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Cash and restricted cash at beginning of year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and restricted cash at end of year Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Purchases of property, equipment, and software through accounts payable Capital Expenditures Incurred but Not yet Paid Notes receivable from sellers used as partial consideration for business acquisitions Notes Issued Common stock issued for business acquisitions Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Cash consideration payable for business acquisition Common share repurchase obligation Noncash Or Part Noncash Acquisition, Common Unit Repurchase Obligation Noncash Or Part Noncash Acquisition, Common Unit Repurchase Obligation Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate Corporate, Non-Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total income from operations of reportable segments Less interest expense Less other, net Income tax benefit Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Card settlements due from merchants, net of estimated losses Card Settlements Due From Merchants [Member] Card Settlements Due From Merchants [Member] Card settlements due from processors Card Settlements Due From Processors [Member] Card Settlements Due From Processors [Member] Card settlements due to merchants Card Settlements Due To Merchants [Member] Card Settlements Due To Merchants [Member] Due To ACH Payees Due To ACH Payees [Member] Due To ACH Payees [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Settlement Assets: Settlement Assets [Abstract] Settlement Assets [Abstract] Settlement assets Settlement Assets, Current Settlement Obligations: Settlement Liabilities [Abstract] Settlement Liabilities [Abstract] Settlement obligations Settlement Liabilities, Current Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Intangible assets, net Finite-Lived Intangible Assets, Net PayRight PayRight [Member] PayRight [Member] RadPad/Landlord Station RadPad And Landlord Station [Member] RadPad And Landlord Station [Member] PPS Northeast Priority Payment Systems Northeast, Inc. [Member] Priority Payment Systems Northeast, Inc. [Member] PPS Tech Priority Payment Systems Tech Partners [Member] Priority Payment Systems Tech Partners [Member] Goodwill [Roll Forward] Goodwill [Roll Forward] Beginning balance Goodwill acquired from business combinations Goodwill, Acquired During Period Ending balance Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2014 Management Incentive Plan Priority Holdings Management Incentive Plan [Member] Priority Holdings Management Incentive Plan [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Tranche One Share-based Compensation Award, Tranche One [Member] Tranche Two Share-based Compensation Award, Tranche Two [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Issued during period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Equity-based compensation expense Allocated Share-based Compensation Expense Restricted stock units, unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Earnings Per Share [Abstract] Earnings Per Share, Basic Earnings Per Share, Basic, Other Disclosures [Abstract] Numerator: Earnings Per Share, Basic [Abstract] Less: Income allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Net (loss) income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted-average common shares outstanding - basic and diluted (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Basic and diluted (loss) earnings per share (USD per share) Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Antidilutive Securities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] 2018 Equity Incentive Plan 2018 Equity Incentive Plan [Member] 2018 Equity Incentive Plan [Member] Number of shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Stock options granted in December 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Stock options grants forfeited in 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period RSU grants in 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Common shares available for issuance under the plan at December 31, 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Postemployment Benefits [Abstract] Company contributions to the plan Defined Contribution Plan, Cost Deferred Tax Assets: Deferred Tax Assets, Gross [Abstract] Accruals and reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals Intangible assets Deferred Tax Assets, Goodwill and Intangible Assets Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Interest limitation carryforwards Deferred Tax Assets, Interest Limitation Carryforwards Deferred Tax Assets, Interest Limitation Carryforwards Other Deferred Tax Assets, Other Gross deferred tax assets Deferred Tax Assets, Gross Valuation allowance Deferred Tax Assets, Valuation Allowance Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Liabilities: Deferred Tax Liabilities, Gross [Abstract] Prepaid assets Deferred Tax Liabilities, Prepaid Expenses Investments in partnership Deferred Tax Liabilities, Investment in Noncontrolled Affiliates Property, plant, and equipment Deferred Tax Liabilities, Property, Plant and Equipment Total deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax assets Deferred Tax Assets, Net Deferred financing costs Amortization of debt issuance costs in interest expense Interest Expense, Amortization Of Debt Issuance Costs Interest Expense, Amortization Of Debt Issuance Costs Accounts Payable [Abstract] Accounts payable Accounts Payable Accrued compensation Employee-related Liabilities, Current Accrued network fees Other Accrued Liabilities, Current Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Common Stockholders of MI Acquisitions Common Stockholders Of MI Acquisitions [Member] Common Stockholders Of MI Acquisitions [Member] MI Acquisitions Founders MI Acquisitions Founders [Member] MI Acquisitions Founders [Member] Sellers Of Priority Sellers Of Priority [Member] Sellers Of Priority [Member] Two Business Acquisition Two Business Acquisition [Member] Two Business Acquisition [Member] Class of Stock [Line Items] Class of Stock [Line Items] Common units (in shares) Common Unit, Issued Business acquisition, shares issued (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Number of business combinations Number of Businesses Acquired Issued during period (in shares) Stock Issued During Period, Shares, New Issues Number of shares converted (in shares) Conversion of Stock, Shares Converted Payments to acquire business Payments to Acquire Businesses, Gross Business acquisition, units issued (in shares) Business Acquisition, Equity Units Issued Or Issuable, Number Of Shares Business Acquisition, Equity Units Issued Or Issuable, Number Of Shares Business acquisition, number of shares per unit (in shares) Business Acquisition, Equity Units Issued Or Issuable, Number Of Shares Per Unit Business Acquisition, Equity Units Issued Or Issuable, Number Of Shares Per Unit Business acquisition, number of warrants per unit Business Acquisition, Equity Units Issued Or Issuable, Number Of Warrants Per Unit Business Acquisition, Equity Units Issued Or Issuable, Number Of Warrants Per Unit Business acquisition, number of shares forfeited (in shares) Business Acquisition, Equity Interest Forfeited, Number Of Shares Business Acquisition, Equity Interest Forfeited, Number Of Shares Number of votes per share Common Stock, Number Of Votes Per Share Common Stock, Number Of Votes Per Share Accounts Payable and Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Term Loan Term Loan [Member] Term Loan [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Syndicate of Lenders Syndicate Of Lenders [Member] Syndicate Of Lenders [Member] Goldman Sachs Specialty Lending Group Goldman Sachs Specialty Lending Group [Member] Goldman Sachs Specialty Lending Group [Member] Additional borrowings Line Of Credit Facility, Additional Borrowings Line Of Credit Facility, Additional Borrowings Debt discount Additional borrowings, undrawn Line Of Credit Facility, Additional Borrowings, Undrawn Line Of Credit Facility, Additional Borrowings, Undrawn Additional borrowings, drawn and undrawn Line Of Credit Facility, Additional Borrowings, Drawn And Undrawn Line Of Credit Facility, Additional Borrowings, Drawn And Undrawn Unused commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Additional fee percentage Line Of Credit Facility, Additional Fee Percentage Line Of Credit Facility, Additional Fee Percentage Face amount of debt Debt Instrument, Face Amount Debt issuance costs incurred Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction Capitalized incremental deferred finance costs Capitalized Incremental Deferred Finance Costs Capitalized Incremental Deferred Finance Costs Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Other Commitments [Table] Other Commitments [Table] Other Commitments [Line Items] Other Commitments [Line Items] Operating leases, terms Lessee, Operating Lease, Term of Contract Rent expense Operating Leases, Rent Expense Minimum processing fees to be paid over next four years Long-term Purchase Commitment, Amount Legal settlement Litigation Settlement, Expense Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Direct Connect Merchant Services, LLC Direct Connect Merchant Services, LLC [Member] Direct Connect Merchant Services, LLC [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-lived intangible assets acquired Finite-lived Intangible Assets Acquired Amortization of intangible assets Amortization of Intangible Assets Goodwill accumulated impairment loss Goodwill, Impaired, Accumulated Impairment Loss Schedule of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Maturities of Long-Term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company Parent Company [Member] Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] January 17, 2018 (1st Redemption) January 17, 2018 1 [Member] January 17, 2018 1 [Member] January 17, 2018 (2nd Redemption) January 17, 2018 2 [Member] January 17, 2018 2 [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Class A Common Class A [Member] Common Class B Common Class B [Member] Redemptions of common stock (in shares) Stock Redeemed or Called During Period, Shares Redemptions of common stock Stock Redeemed or Called During Period, Value Common unit repurchase obligation, purchase price Common Unit Repurchase Obligation, Purchase Price Common Unit Repurchase Obligation, Purchase Price Common unit repurchase obligation Common Unit Repurchase Obligation Common Unit Repurchase Obligation Reclass of common unit repurchase obligation Reclass Of Common Unit Repurchase Obligation Reclass Of Common Unit Repurchase Obligation Ownership percentage Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Member distributions Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Federal Domestic Tax Authority [Member] State State and Local Jurisdiction [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Deferred income taxes, net Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Deferred tax assets, valuation allowance Net operating loss carryforward Operating Loss Carryforwards Operating loss carryforwards, 80% of future taxable income, indefinite period of time Operating Loss Carryforwards, Eighty Percent Of Future Taxable Income, Indefinite Period Of Time Operating Loss Carryforwards, Eighty Percent Of Future Taxable Income, Indefinite Period Of Time Operating loss carryforwards, 100% of future taxable income, expiration date 2036 to 2038 Operating Loss Carryforwards, One Hundred Percent Of Future Taxable Income, Expiration Date Limitation Operating Loss Carryforwards, One Hundred Percent Of Future Taxable Income, Expiration Date Limitation Tax Cuts and Jobs Act of 2017, interest deduction limitation Tax Cuts And Jobs Act Of 2017, Interest Deduction Limitation Tax Cuts And Jobs Act Of 2017, Interest Deduction Limitation The Earnout Incentive Plan The Earnout Incentive Plan [Member] The Earnout Incentive Plan [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) - Performance Based With Market Condition Restricted Stock Units (RSUs) - Performance Based With Market Condition [Member] Restricted Stock Units (RSUs) - Performance Based With Market Condition [Member] Common shares issued as earn-out consideration (in shares) Common Stock, Shares Authorized, Earn-Out Consideration Common Stock, Shares Authorized, Earn-Out Consideration Restricted stock units, number of shares issued (in shares) Restricted stock units, grant-date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share Number of additional grants available (in shares) Merchant Portfolios Customer Contracts [Member] Other Intangible Assets Other Intangible Assets [Member] Finite-lived intangible assets, useful lives Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] MI Acquisitions Warrants MI Acquisitions Warrants [Member] MI Acquisitions Warrants [Member] MI Acquisitions Warrants, Public MI Acquisitions Warrants, Public [Member] MI Acquisitions Warrants, Public [Member] MI Acquisitions Warrants, Private MI Acquisitions Warrants, Private [Member] MI Acquisitions Warrants, Private [Member] MI Acquisitions Purchase Options MI Acquisitions Purchase Options [Member] MI Acquisitions Purchase Options [Member] Warrants and rights, number of shares allowed to purchase (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrants, exercise price (in dollars per share) Warrants outstanding (in shares) Class of Warrant or Right, Outstanding Warrants, term Warrants and Rights Outstanding, Term Warrants, redemption price (in dollars per share) Class Of Warrant Or Right, Redemption Price Of Warrants Or Rights Class Of Warrant Or Right, Redemption Price Of Warrants Or Rights Warrants, minimum stock price (in dollars per share) Class Of Warrant Or Right, Minimum Stock Price Class Of Warrant Or Right, Minimum Stock Price Call-right, aggregate purchase price (in dollars per share) Class Of Warrant Or Right, Aggregate Purchase Price Class Of Warrant Or Right, Aggregate Purchase Price Number of securities called by each warrant Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Stockholders' Equity (Deficit) Stockholders' Equity Note Disclosure [Text Block] Receivables [Abstract] Schedule of Notes Receivable Maturities Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Notes receivable, average interest rate Notes Receivable, Average Interest Rate Notes Receivable, Average Interest Rate Notes receivable, reserve Loans and Leases Receivable, Allowance 2019 Notes, Loans and Financing Receivable, Net, Current 2020 Notes, Loans and Financing Receivable, Net, Noncurrent Notes receivable Notes, Loans And Financing Receivable, Net Notes, Loans And Financing Receivable, Net Warrants issued and redeemed, percent of outstanding Class A common stock Warrants Issued And Redeemed, Percent Of Outstanding Common Stock Warrants Issued And Redeemed, Percent Of Outstanding Common Stock U.S. current income tax expense Current Federal, State and Local, Tax Expense (Benefit) [Abstract] Federal Current Federal Tax Expense (Benefit) State and local Current State and Local Tax Expense (Benefit) Total current income tax expense Current Federal, 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Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive securities that were excluded from EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Accounts Payable and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of Segment Reporting Information by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of Revenue from Segments to Consolidated Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] (Loss) Earnings Per Share Earnings Per Share [Text Block] Long-Tem Debt and Warrant Liability Debt Disclosure [Text Block] Summary of Quarterly Financial Information (Unaudited) Quarterly Financial Information [Table Text Block] Property, Plant and Equipment [Abstract] Property, Equipment and Software Property, Plant and Equipment Disclosure [Text Block] Goodwill, impairment loss Goodwill, Impairment Loss Assets Assets Employee Benefit Plans Defined Contribution Plan Disclosures [Table Text Block] Maximum allowable loan advances Maximum Allowable Loan Advances Maximum Allowable Loan Advances Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Additional Paid-In Capital (Deficit) Additional Paid-in Capital [Member] Retained Earnings/Accumulated Deficit Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Shares, Outstanding Beginning balance Stockholders' Equity Attributable to Parent Cash distributions to members Dividends Member redemptions (in shares) Member redemptions Conversion of MI Acquisitions, Inc. shares (in shares) Stock Issued During Period, Shares, Conversion Of Business Acquisition Stock Issued During Period, Shares, Conversion Of Business Acquisition Conversion of MI Acquisitions, Inc. shares Stock Issued During Period, Value, Conversion Of Business Acquisition Stock Issued During Period, Value, Conversion Of Business Acquisition Pro-rata adjustment and forfeitures (in shares) Stock Issued During Period, Shares, Conversion of Units Effects of Founders' Share Agreement, net (in shares) Stockholders' Equity, Other Shares Effects of Founders' Share Agreement Stockholders' Equity, Other Equity-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Equity-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Reclass for common shares repurchase obligation Adjustment To Additional Paid In Capital, Reclass For Common Shares Repurchase Obligation Adjustment To Additional Paid In Capital, Reclass For Common Shares Repurchase Obligation Elimination of Class C units (in shares) Elimination Of Class C Units, Shares Elimination Of Class C Units, Shares Release of contingent consideration Adjustment To Additional Paid In Capital, Release Of Contingent Consideration Adjustment To Additional Paid In Capital, Release Of Contingent Consideration Elimination of Preferred units (in shares) Elimination Of Preferred Units, Shares Elimination Of Preferred Units, Shares Recapitalization costs Recapitalization Costs Net deferred income taxes related to loss of partnership status Stockholders' Equity, Change in Reporting Entity Common stock issued for business acquisitions (in shares) Net income (loss) Ending balance (in shares) Ending balance Statement of Financial Position [Abstract] Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Preferred stock par value (USD per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Earn-out consideration, future minimum EBITDA Earn-Out Consideration, Future Minimum EBITDA Earn-Out Consideration, Future Minimum EBITDA Earn-out consideration, minimum stock price (in dollars per share) Earn-Out Consideration, Minimum Stock Price Earn-Out Consideration, Minimum Stock Price Common shares issued as earn-out consideration (in shares) Common Stock, Shares Issued, Earn-Out Consideration Common Stock, Shares Issued, Earn-Out Consideration Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] 2019 Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months 2020 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five Total Debt Restricted Stock Units (RSUs) - Service Based Restricted Stock Units (RSUs) - Service Based [Member] Restricted Stock Units (RSUs) - Service Based [Member] Restricted stock units, total grant-date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Share-based awards, compensation cost recognition period (in years) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Revenues: Revenues [Abstract] Total revenue Operating income (loss): Net Income (Loss) Attributable to Parent [Abstract] Depreciation and amortization: Depreciation, Amortization and Accretion, Net [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Business Combinations [Abstract] Subsidiaries Subsidiaries [Member] PayRight RadPad and Landlord Station PPS Northeast PPS Tech Priority PayRight Health Solutions, LLC Priority PayRight Health Solutions, LLC [Member] Priority PayRight Health Solutions, LLC [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Intangible assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Total consideration transferred Other consideration transferred Business Combination, Consideration Transferred, Other Equity interest in acquiree, carrying value Equity Method Investments Equity interest in acquiree, fair value Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Impairment loss Asset Impairment Charges Debt incurred Business Combination, Consideration Transferred, Liabilities Incurred Transaction costs Business Combination, Acquisition Related Costs Goodwill, measurement period adjustments Goodwill, Purchase Accounting Adjustments Contingent consideration maximum Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Schedule of Fair Value Liabilities Measured on Recurring Basis Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Additional Paid-In Capital Number of non-controlling interest subsidiaries Number Of Non-Controlling Interest Subsidiaries Number Of Non-Controlling Interest Subsidiaries U.S. federal statutory (benefit) Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Earnings as dual-member LLC Effective Income Tax Rate Reconciliation, Earnings As Dual-Member LLC Effective Income Tax Rate Reconciliation, Earnings As Dual-Member LLC State and local income taxes, net Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Excess tax benefits pursuant to ASU 2016-09 Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Valuation allowance changes Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Nondeductible items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, January 1, 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted in 2018 (in shares) Exercised in 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited in 2018 (in shares) Expired in 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Outstanding, December 31, 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, January 1, 2018, weighted-average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted in 2018, weighted-average exercise price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised in 2018, weighted-average exercise price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited in 2018, weighted-average exercise price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Expired in 2018, weighted-average exercise price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding, December 31, 2018, weighted-average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Outstanding, weighted-average remaining contractual terms December 31, 2018 (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward] Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward] Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward] Outstanding, January 1, 2018, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Granted in 2018, aggregate intrinsic value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Issued, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Issued, Weighted Average Grant Date Fair Value Exercised in 2018, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Forfeited in 2018, aggregate intrinsic value Share-Based Compensation Arrangement By Share-based Payment Award, Options, Forfeitures In Period, Aggregate Intrinsic Value Share-Based Compensation Arrangement By Share-based Payment Award, Options, Forfeitures In Period, Aggregate Intrinsic Value Expired in 2018, aggregate intrinsic value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expirations In Period, Aggregate Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expirations In Period, Aggregate Intrinsic Value Outstanding, December 31, 2018, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Vested and expected to vest, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Vested and expected to vest, weighted average remaining contractual term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Vested and expected to vest, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Exercisable, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Exercisable, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Deferred income tax assets Deferred Income Tax Assets, Net Intangible assets, gross Finite-Lived Intangible Assets, Gross Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Merchant reserves held by sponsor banks Merchant Reserves Held By Sponsor Banks Merchant Reserves Held By Sponsor Banks Settlement assets, estimated shortfall Settlement Assets, Estimated Shortfall Settlement Assets, Estimated Shortfall Line of credit Long-term Line of Credit Interest expense Quarterly principal payment Debt Instrument, Periodic Payment Mandatory prepayment based on excess cash flow Debt Instrument, Mandatory Prepayment Based On Excess Cash Flow Debt Instrument, Mandatory Prepayment Based On Excess Cash Flow Total debt Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected term (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Exercise price Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price Settlement Assets Offsetting Assets [Table Text Block] Settlement Obligations Offsetting Liabilities [Table Text Block] Selected Quarterly Financial Results (Unaudited) Quarterly Financial Information [Text Block] Schedule of Equity Structure Schedule of Stockholders Equity [Table Text Block] Base Rate Base Rate [Member] Loss on debt extinguishment Net leverage ratio Debt Instrument, Covenant, Maximum Total Net Leverage Ratio Debt Instrument, Covenant, Maximum Total Net Leverage Ratio Net leverage ratio realized Total Net Leverage Ratio Total Net Leverage Ratio 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2021 Operating Leases, Future Minimum Payments, Due in Three Years 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2023 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Business Combinations Business Combination Disclosure [Text Block] Summary of Cumulative Activity for the 2018 Plan Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Schedule of Stock Options Roll Forward Schedule of Stock Options Roll Forward [Table Text Block] Summary of Valuation Assumptions for Stock Options Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Trading Symbol Trading Symbol Document Period End Date Document Period End Date Amendment Flag Amendment Flag Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Ex Transition Period Entity Ex Transition Period Entity Shell Company Entity Shell Company Current Fiscal Year End Date Current Fiscal Year End Date Entity a Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity a Voluntary Filer Entity Voluntary Filers Entity's Reporting Status Current Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Public Float Entity Public Float Equity-Based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Computer software Software and Software Development Costs [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Useful Life Property, Plant and Equipment, Useful Life Impairment of internal use software Capitalized Computer Software, Impairments Software costs capitalized during the period Capitalized Computer Software, Additions Capitalized computer software, net Capitalized Computer Software, Net Capitalized computer software, amortization Capitalized Computer Software, Amortization Residual commission expenses Sales Commissions and Fees Advertising and promotion expense Advertising Expense Employee Stock Option Employee Stock Option [Member] Tranche Three Share-based Compensation Award, Tranche Three [Member] Expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Stock options vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value Stock option expense, not yet recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Property, Equipment and Software Property, Plant and Equipment [Table Text Block] Subsequent Event [Table] Subsequent Event [Table] YapStone, Inc YapStone, Inc [Member] YapStone, Inc [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] President, Chief Executive Officer And Chairman President, Chief Executive Officer And Chairman [Member] President, Chief Executive Officer And Chairman [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Percentage of eTab owned by president, chief executive office and chairman prior to transaction Percentage Of Ownership Before Transaction Percentage Of Ownership Before Transaction Sellers eligible amount to receive Redeemable Noncontrolling Interest, Equity, Preferred, Redemption Value Percentage of PHT preferred stock owned by president, chief executive officer and chairman Preferred Stock, Percentage Owned Preferred Stock, Percentage Owned Payments to acquire business Asset Acquisition, Assets Acquired And Liabilities Assumed, Net Asset Acquisition, Assets Acquired And Liabilities Assumed, Net Non-controlling interest issued Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Payment to acquire certain residual portfolio rights Contingent Purchase Price Increase, Acquisition Of Intangible Assets Contingent Purchase Price Increase, Acquisition Of Intangible Assets Contingent Purchase Price Increase, Acquisition Of Intangible Assets Capitalized lender fees Capitalized Lender Fees Capitalized Lender Fees Fair Value Fair Value Disclosures [Text Block] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents Accounts receivable, net of allowances of $511 and $484, respectively Accounts Receivable, Net, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Current portion of notes receivable (Note 4) Settlement assets (Note 3) Total current assets Assets, Current Notes receivable, less current portion (Note 4) Property, equipment, and software, net (Note 6) Property, Plant and Equipment, Net Goodwill (Note 5) Intangible assets, net (Note 5) Intangible Assets, Net (Excluding Goodwill) Deferred income tax assets, net (Note 9) Deferred Tax Assets, Net, Noncurrent Other non-current assets Other Assets, Noncurrent Total assets LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT) Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable and accrued expenses (Note 7) Accounts Payable and Accrued Liabilities, Current Accrued residual commissions Accrued Sales Commission, Current Customer deposits and advance payments Customer Deposits, Current Current portion of long-term debt (Note 8) Settlement obligations (Note 3) Current portion of equity repurchase obligation Common Unit Repurchase Obligation, Current Common Unit Repurchase Obligation, Current Total current liabilities Liabilities, Current Long-term debt, net of discounts and deferred financing costs (Note 8) Warrant liability (Note 8) Equity repurchase obligation Common Unit Repurchase Obligation, Noncurrent Common Unit Repurchase Obligation, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Total long-term liabilities Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 10) Commitments and Contingencies Stockholders' equity (deficit): (Note 12) Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, par value $0.001 per share, 100,000,000 and zero shares authorized at December 31, 2018 and 2017, respectively, and zero shares issued and outstanding at December 31, 2018 and 2017 Preferred Stock, Value, Issued Common stock, par value of $0.001 per share, 1 billion shares authorized, 67,038,304 and 73,110,114 shares issued and outstanding at December 31, 2018 and 2017, respectively Common Stock, Value, Issued Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders' equity (deficit) Total liabilities and stockholders' equity (deficit) Liabilities and Equity Income Statement [Abstract] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Merchant card fees revenue Credit and Debit Card [Member] Outsourced services and other License and Service [Member] Other Product and Service, Other [Member] REVENUE: OPERATING EXPENSES: Operating Expenses [Abstract] Cost of services Cost of Goods and Services Sold Salary and employee benefits Labor and Related Expense Selling, general and administrative Selling, General and Administrative Expense Changes in fair value of contingent consideration Total operating expenses Income from operations OTHER (EXPENSES) INCOME: Other Nonoperating Income (Expense) [Abstract] Total other expenses Nonoperating Income (Expense) (Loss) income before income taxes Income (Loss) Attributable to Parent, before Tax (Loss) income per common share: (Note 17) Earnings Per Share, Basic and Diluted [Abstract] Weighted-average common shares outstanding: (Note 17) Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] PRO FORMA (C-corporation basis): (Note 9) Change In Tax Basis Abstract [Abstract] Change In Tax Basis Abstract [Abstract] Pro forma income tax (benefit) expense (unaudited) Business Acquisition, Pro Forma Income Tax Expense (Benefit) Business Acquisition, Pro Forma Income Tax Expense (Benefit) Pro forma net (loss) income (unaudited) Business Acquisition, Pro Forma Net Income (Loss) (Loss) earnings per common share: Earnings Per Share, Pro Forma [Abstract] Basic and diluted (unaudited) (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Basic And Diluted Business Acquisition, Pro Forma Earnings Per Share, Basic And Diluted Furniture and fixtures Furniture and Fixtures [Member] Equipment Equipment [Member] Leasehold improvements Leasehold Improvements [Member] Property, equipment and software, gross Property, Plant and Equipment, Gross Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, equipment, and software, net Depreciation expense Depreciation Segment Information Segment Reporting Disclosure [Text Block]