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] Revenue from Contract with Customer [Abstract] Contract liabilities, net (current) Contract with Customer, Liability, Current Earnings Per Share [Abstract] 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] Related Party Transactions [Abstract] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] 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 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Schedule of Asset Acquisition [Table] Schedule of Asset Acquisition [Table] Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Domain] Asset Acquisition [Domain] [Domain] for Asset Acquisition [Axis] YapStone, Inc YapStone, Inc [Member] YapStone, Inc [Member] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition [Line Items] [Line Items] for Schedule of Asset Acquisition [Table] Payments for asset acquisitions Payments For Asset Acquisitions Payments For Asset Acquisitions Non-controlling interest in a subsidiary Stockholders' Equity Attributable to Noncontrolling Interest Asset acquisition,software license agreement Asset Acquisition, Software License Agreement Asset Acquisition, Software License Agreement Asset acquisition,service agreement Asset Acquisition, Service Agreement Asset Acquisition, Service Agreement Equity [Abstract] Schedule of Equity Structure Schedule of Stockholders Equity [Table Text Block] Statement of 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Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Accrued residual commissions Accrued Sales Commission, Current Customer deposits and advance payments Contract With Customer, Liability, Current And Other Contract With Customer, Liability, Current And Other Current portion of long-term debt Long-term Debt, Current Maturities Settlement obligations Settlement Liabilities, Current Total current liabilities Liabilities, Current Long-term debt, net of current portion, discounts and debt issuance costs Long-term Debt, Excluding Current Maturities Other non-current liabilities Other Liabilities, Noncurrent Total long-term liabilities Liabilities, Noncurrent Total liabilities Liabilities Stockholders' deficit: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock - $0.001 par value per share;100,000,000 shares authorized; zero issued or outstanding Preferred Stock, Value, Issued Common stock - $0.001 par value per share;1,000,000,000 shares authorized; 67,565,359 and 67,512,167 shares issued, respectively; 67,114,135 and 67,060,943 shares outstanding, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Treasury stock, 451,224 common shares, at cost Treasury Stock, Value Accumulated deficit Retained Earnings (Accumulated Deficit) Total Priority Technology Holdings, Inc. stockholders' deficit Stockholders' Equity Attributable to Parent Total stockholders' deficit Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders' deficit Liabilities and Equity Schedule of Settlement Assets Offsetting Assets [Table Text Block] Schedule of Settlement Obligations Offsetting Liabilities [Table Text Block] Goodwill accumulated impairment loss Goodwill, Impaired, Accumulated Impairment Loss Amortization of 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Group [Member] Goldman Sachs Specialty Lending Group [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Term Loan Term Loan [Member] Term Loan [Member] Revolving Credit Facility Revolving Credit Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] 2021 (current) Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months 2022 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two 2023 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Three 2024 Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four Total debt obligations Long-term Debt, Gross Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Preferred stock par value (USD per share) Preferred Stock, Par or Stated Value Per Share Preferred stock authorized (in shares) Preferred Stock, Shares Authorized Preferred stock issued (in shares) Preferred Stock, Shares Issued Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Common stock par value (USD per share) Common Stock, Par or Stated Value Per Share Common stock, authorized (in shares) Common Stock, Shares Authorized Common stock issued (in shares) Common Stock, Shares, Issued Common stock outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock (in shares) Treasury Stock, Shares Fair Value Disclosures [Abstract] FAIR VALUE Fair Value Disclosures [Text Block] DEBT OBLIGATIONS Debt Disclosure [Text Block] Accounts Payable [Abstract] ACCOUNTS PAYABLE AND ACCRUED EXPENSES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] 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] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Treasury Stock Treasury Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Accumulated (Deficit) Retained Earnings [Member] Total Priority Technology Holdings, Inc. 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Net Of Amortization Expense Debt Instrument, Unamortized Discount, Including Capitalized Fees. Net Of Amortization Expense Amortization of debt discount (premium) and debt issuance costs Amortization Of Debt Discount (Premium) And Debt Issuance Costs Amortization Of Debt Discount (Premium) And Debt Issuance Costs Third party costs Debt Related Commitment Fees and Debt Issuance Costs Debt covenant, maximum net leverage ratio Debt Covenant, Maximum Net Leverage Ratio Debt Covenant, Maximum Net Leverage Ratio 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] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] 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] Merchant reserves held by sponsor banks Merchant Reserves Held By Sponsor Banks Merchant Reserves Held By Sponsor Banks Effective interest rate percentage Line of Credit Facility, Interest Rate During Period Schedule of Outstanding Debt Obligations 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] Share-based Payment Arrangement [Abstract] Schedule of Summary of Equity Based Compensation by Plan Share-based Payment Arrangement, Cost by Plan [Table Text Block] STOCK-BASED COMPENSATION PLANS Share-based Payment Arrangement [Text Block] Accounting Policies [Abstract] BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Income Statement [Abstract] REVENUES Revenues [Abstract] REVENUES Revenue from Contract with Customer, Excluding Assessed Tax OPERATING EXPENSES: Operating Expenses [Abstract] Costs of services Cost of Goods and Services Sold Salary and employee benefits Labor and Related Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Selling, general and administrative Selling, General and Administrative Expense Total operating expenses Costs and Expenses Income from operations OTHER INCOME (EXPENSES): Other Nonoperating Income (Expense) [Abstract] Interest expense Other income (expense), net Total other expenses, net Nonoperating Income (Expense) Loss before income taxes Income (Loss) Attributable to Parent, before Tax Income tax expense (benefit) Net loss Loss per common share: Earnings Per Share, Basic and Diluted [Abstract] Basic and diluted (USD per share) Earnings Per Share, Basic and Diluted Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Basic [Abstract] Basic and diluted (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted NON-CONTROLLING INTERESTS Asset Acquisition Disclosure [Text Block] Asset Acquisition Disclosure [Text Block] Schedule of Segment Reporting Information by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Reconciliation of Revenue from Segments to Consolidated Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Outstanding warrants on common stock Warrant [Member] Restricted stock unit awards granted under the 2018 Equity Incentive Plan Restricted Stock Units (RSUs) [Member] Outstanding stock option awards granted under the 2018 Equity Incentive Plan Share-based Payment Arrangement, Option [Member] Liability-based restricted stock units Liability-Based Restricted Stock Unit [Member] Liability-Based Restricted Stock Unit [Member] Restricted stock units granted under the Earnout Incentive Plan Earnout Incentive Awards [Member] Earnout Incentive Awards [Member] Antidilutive Securities 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 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] Senior Notes Senior Notes [Member] Subordinated Debt Subordinated Debt [Member] LIBOR London Interbank Offered Rate (LIBOR) [Member] Payment-in-Kind Interest Rate Payment-In-Kind Interest Rate [Member] Payment-In-Kind Interest Rate Less: current portion of long-term debt Less: unamortized debt discounts and deferred financing costs Debt Instrument, Unamortized Discount Long-term debt, net Long-term Debt Basis spread on variable rate Interest rate during period Line of Credit Facility, Interest Rate at Period End LOSS PER COMMON SHARE Earnings Per Share [Text Block] INCOME TAXES Income Tax Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2018 Equity Incentive Plan 2018 Equity Incentive Plan [Member] 2018 Equity Incentive Plan [Member] 2014 Management Incentive Plan 2014 Management Incentive Plan [Member] 2014 Management Incentive Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Deferred Compensation Share-Based Arrangements, Expense Deferred Compensation Share-Based Arrangements, Expense Deferred Compensation Share-Based Arrangements, Expense Equity-based compensation Share-Based Payment Arrangement, Expense, Excluding Deferred Compensation Share-Based Arrangements Expense Share-Based Payment Arrangement, Expense, Excluding Deferred Compensation Share-Based Arrangements Expense Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Adjustment to reconcile net loss 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-classified and liability-classified stock compensation Share-based Payment Arrangement, Expense Amortization of debt issuance costs and discounts Amortization of Debt Issuance Costs and Discounts Deferred income tax benefit Deferred Income Taxes and Tax Credits Change in allowance for deferred tax assets Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Other non-cash items, net Other Noncash Income (Expense) Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Settlement assets and obligations, net 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 accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Customer deposits and advance payments Increase (Decrease) In Contract With Customer, Liability, Current And Other Increase (Decrease) In Contract With Customer, Liability, Current And Other Other assets and liabilities, net 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] Additions to property, equipment and software Payments to Acquire Property, Plant, and Equipment Acquisitions of intangible assets Payments to Acquire Intangible Assets Note receivable loan funding Origination of Notes Receivable from Related Parties Note receivable loan funding Payments for (Proceeds from) Other Investing Activities 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 Repayment of long-term debt Repayments of Long-term Debt Debt modification costs Payments of Debt Restructuring Costs Borrowings under revolving credit facility Proceeds from Lines of Credit Repayments under revolving credit facility Repayments of Lines of Credit Repurchases of common stock Payments for Repurchase of Common Stock Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and restricted cash at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and restricted cash at end of period 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] PIK interest added to principal of debt obligations Paid-In-Kind Interest Added To Principal Of Debt Obligations Paid-In-Kind Interest Added To Principal Of Debt Obligations Payment of accrued contingent consideration for asset acquisition from offset of account receivable Payment Of Accrued Contingent Consideration For Asset Acquisition From Offset Of Accounts Receivable Payment Of Accrued Contingent Consideration For Asset Acquisition From Offset Of Accounts Receivable Accrued purchases of property, equipment and software Capital Expenditures Incurred but Not yet Paid Intangible assets acquired by issuing non-controlling interest in a subsidiary Intangible Assets Acquired By Non-Controlling Interest Entity Intangible Assets Acquired By Non-Controlling Interest Entity Reconciliation of cash and restricted cash: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Cash Restricted cash Total cash and restricted cash PROPERTY, EQUIPMENT AND SOFTWARE Property, Plant and Equipment Disclosure [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Priority Hospitality Technology, LLC Priority Hospitality Technology, LLC [Member] Priority Hospitality Technology, LLC [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Chief Executive Officer And Chairman Chief Executive Officer And Chairman [Member] Chief Executive Officer And Chairman [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Notes receivable, noncurrent Financing Receivable, before Allowance for Credit Loss, Noncurrent Notes receivable, maximum loan commitment available for future issuance, noncurrent Notes, Loans And Financing Receivable, Gross, Maximum Loan Commitment Available For Future Issuance, Noncurrent Notes, Loans And Financing Receivable, Gross, Maximum Loan Commitment Available For Future Issuance, Noncurrent Notes receivable, noncurrent, annual interest rate Notes, Loans And Financing Receivable, Gross, Noncurrent, Annual Interest Rate Notes, Loans And Financing Receivable, Gross, Noncurrent, Annual Interest Rate Interest income, related party Interest Income, Related Party Percentage of ownership before transaction Percentage Of Ownership Before Transaction Percentage Of Ownership Before Transaction Redeemable noncontrolling interest, equity, preferred, redemption value Redeemable Noncontrolling Interest, Equity, Preferred, Redemption Value Preferred yield per year Redeemable Noncontrolling Interest, Equity, Preferred, Annual Preferred Yield Percent Redeemable Noncontrolling Interest, Equity, Preferred, Annual Preferred Yield Percent Preferred stock, percentage owned Preferred Stock, Percentage Owned Preferred Stock, Percentage Owned Income (loss) from equity method investments Income (Loss) from Equity Method Investments SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Commercial Payments Commercial Payments And Managed Services [Member] Commercial Payments And Managed Services [Member] Revenue: Revenue Income (loss) from operations: Net Income (Loss) Attributable to Parent [Abstract] Depreciation and amortization: Depreciation, Amortization and Accretion, Net [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] 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] Customer relationships Customer Relationships [Member] Residual buyouts Residual Buyouts [Member] Residual Buyouts [Member] Non-compete agreements Noncompete Agreements [Member] Trade names Trade Names [Member] Technology Developed Technology Rights [Member] ISO relationships ISO Relationships [Member] ISO Relationships [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangible assets, gross Finite-Lived Intangible Assets, Gross Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible assets, net Finite-Lived Intangible Assets, Net Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Merchant card fees Merchant Card Fees [Member] Merchant Card Fees [Member] Outsourced services and other services Outsourced Services And Other Services [Member] Outsourced Services And Other Services [Member] Equipment Equipment Sales [Member] Equipment Sales [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total revenues Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Priority Payment Systems Tech Partners Priority Payment Systems Tech Partner [Member] Priority Payment Systems Tech Partner [Member] Priority Payment Systems Northeast Priority Payment Systems Northeast [Member] Priority Payment Systems Northeast [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] Contingent consideration weighted payout probability percentage Business Combination Contingent Consideration Weighted Payout Probability Percentage Business Combination Contingent Consideration Weighted Payout Probability Percentage Contingent consideration remaining Business Combination, Contingent Consideration, Liability Contingent consideration remaining, fair value Business Combination, Contingent Consideration, Liability, Fair Value Disclosure Business Combination, Contingent Consideration, Liability, Fair Value Disclosure Notes receivable, fair value Notes Receivable, Fair Value Disclosure Long-term debt fair value Long-term Debt, Fair Value Long-term debt 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] Furniture and fixtures Furniture and Fixtures [Member] Equipment Equipment [Member] Computer software Software and Software Development Costs [Member] Leasehold improvements Leasehold Improvements [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] 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 Useful Life Property, Plant and Equipment, Useful Life Depreciation expense Depreciation Accounts payable Accounts Payable Accrued network fees Other Accrued Liabilities, Current Commitments and Contingencies Disclosure [Abstract] Service Agreements Commitment to pay minimum processing fees under agreements Long-term Purchase Commitment, Amount Number of agreements Number of Agreements Number of Agreements Reseller arrangement, period Reseller Arrangement, Period Reseller Arrangement, Period Asset acquisition, contingent consideration Asset Acquisition, Contingent Consideration Asset Acquisition, Contingent Consideration Asset acquisition, intangible assets Asset Acquisition, Intangible Assets Asset Acquisition, Intangible Assets Proceeds from lines of credit Contingent cash payments for asset acquisitions Contingent Cash Payments For Asset Acquisitions Contingent Cash Payments For Asset Acquisitions Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Schedule of Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] RECONCILIATION OF STOCKHOLDERS' DEFICIT AND NON-CONTROLLING INTEREST Stockholders' Equity Note Disclosure [Text Block] Basic and Diluted Loss Per Common Share: Earnings Per Share, Basic, Other Disclosures [Abstract] Numerator: Earnings Per Share, Basic [Abstract] Less: Earnings attributable to NCI Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Net loss attributable to common stockholders of Priority Technology Holdings, Inc. Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted-average shares outstanding (in shares) Basic and Diluted Loss Per Common Share (USD per share) Schedule of Income Tax (Benefit) Provision Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Commercial Payments Number of reportable segments Number of Reportable Segments Percentage of revenue Percentage of Revenue Percentage of Revenue Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Comparability of Reporting Periods Reclassification, Policy [Policy Text Block] Accounting Policies And New Accounting Standards Adopted and Recently Issued Standards Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Revenue Recognition Revenue [Policy Text Block]