<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="prth-20210203.xsd" xlink:type="simple"/>
    <context id="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001653558</identifier>
        </entity>
        <period>
            <startDate>2021-02-03</startDate>
            <endDate>2021-02-03</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV80L2ZyYWc6NDMzMGE2NmM0MTJlNDZlNDg0YjAwZmY0OWI1MGI4MmQvdGFibGU6ZmMwMjRjZjdmMjgyNDU1M2E4ZmZlMGMxYzc3MDRlZWUvdGFibGVyYW5nZTpmYzAyNGNmN2YyODI0NTUzYThmZmUwYzFjNzcwNGVlZV8xLTEtMS0xLTA_c52b982c-e7e3-40d9-96d0-0cf803d74d49">0001653558</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV80L2ZyYWc6NDMzMGE2NmM0MTJlNDZlNDg0YjAwZmY0OWI1MGI4MmQvdGFibGU6ZmMwMjRjZjdmMjgyNDU1M2E4ZmZlMGMxYzc3MDRlZWUvdGFibGVyYW5nZTpmYzAyNGNmN2YyODI0NTUzYThmZmUwYzFjNzcwNGVlZV80LTEtMS0xLTA_d1851209-ddd3-426d-8c1d-41f29b0aecb4">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNzAw_ec0d047a-e5d4-4b97-9ae0-69bf258bbdfc">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNzk_e84c40d2-efa6-45cf-b8a1-cc51339d0883">2021-02-03</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNzAx_3bc00920-e5b2-43a5-977b-e2fe83f6059d">Priority Technology Holdings, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YmNhNDQ3YTZhN2M2NDliMGE1MGY2NDBkZjZhMWI5MDAvdGFibGVyYW5nZTpiY2E0NDdhNmE3YzY0OWIwYTUwZjY0MGRmNmExYjkwMF8wLTAtMS0xLTA_a1657361-ba9e-45cc-a2d9-9293e8fa447d">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YmNhNDQ3YTZhN2M2NDliMGE1MGY2NDBkZjZhMWI5MDAvdGFibGVyYW5nZTpiY2E0NDdhNmE3YzY0OWIwYTUwZjY0MGRmNmExYjkwMF8wLTItMS0xLTA_ec0a640b-ab17-435f-8c0c-891ec4eea010">001-37872</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YmNhNDQ3YTZhN2M2NDliMGE1MGY2NDBkZjZhMWI5MDAvdGFibGVyYW5nZTpiY2E0NDdhNmE3YzY0OWIwYTUwZjY0MGRmNmExYjkwMF8wLTQtMS0xLTA_c3b47f78-23c3-4015-99be-f4643d053148">47-4257046</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YTEyYzgxNTU3MWE1NDU0MGJlZjM0ZmI0MmIzMGRjOWIvdGFibGVyYW5nZTphMTJjODE1NTcxYTU0NTQwYmVmMzRmYjQyYjMwZGM5Yl8wLTAtMS0xLTA_939fa746-479b-4426-a383-3416dba43d49">2001 Westside Parkway</dei:EntityAddressAddressLine1>
    <dei:EntityAddressPostalZipCode
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YTEyYzgxNTU3MWE1NDU0MGJlZjM0ZmI0MmIzMGRjOWIvdGFibGVyYW5nZTphMTJjODE1NTcxYTU0NTQwYmVmMzRmYjQyYjMwZGM5Yl8wLTMtMS0xLTA_987ee047-908d-4c25-bdea-5b20762ad11a">30004</dei:EntityAddressPostalZipCode>
    <dei:EntityAddressAddressLine2
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YTEyYzgxNTU3MWE1NDU0MGJlZjM0ZmI0MmIzMGRjOWIvdGFibGVyYW5nZTphMTJjODE1NTcxYTU0NTQwYmVmMzRmYjQyYjMwZGM5Yl8xLTAtMS0xLTA_ff55b79f-afa3-45b5-a875-351c9c4c525e">Suite 155</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YTEyYzgxNTU3MWE1NDU0MGJlZjM0ZmI0MmIzMGRjOWIvdGFibGVyYW5nZTphMTJjODE1NTcxYTU0NTQwYmVmMzRmYjQyYjMwZGM5Yl8yLTAtMS0xLTA_d2161b18-0bcc-4ad4-9c9d-8f23eb1186ce">Alpharetta,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6YTEyYzgxNTU3MWE1NDU0MGJlZjM0ZmI0MmIzMGRjOWIvdGFibGVyYW5nZTphMTJjODE1NTcxYTU0NTQwYmVmMzRmYjQyYjMwZGM5Yl8yLTEtMS0xLTA_d51b4a83-cb4f-4415-8fa3-9f77ffb95b24">GA</dei:EntityAddressStateOrProvince>
    <dei:CityAreaCode
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNjk1_ed2fc044-fe5b-493d-8708-b890e2e75bb8">800</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNjk2_056ea142-417c-455f-b651-24be734555a9">935-5961</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNzAy_8ecb3991-e376-414a-a9de-36d7dff0fc70">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNzAz_a5d2f84a-fb22-438d-8bb1-d1e241f61ddc">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNjk3_37577951-6ed2-4290-815c-d9b975ae7c46">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNjk4_ef348ed7-567b-47ad-9d89-815f155bb4e1">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6ZTYzMzUxMzc1MTE5NDE2MTllNTQyODg2MTYwYjYxNDkvdGFibGVyYW5nZTplNjMzNTEzNzUxMTk0MTYxOWU1NDI4ODYxNjBiNjE0OV8xLTAtMS0xLTA_b5796560-df23-45b7-bde3-a9091a26476d">Common stock, $0.001 par value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6ZTYzMzUxMzc1MTE5NDE2MTllNTQyODg2MTYwYjYxNDkvdGFibGVyYW5nZTplNjMzNTEzNzUxMTk0MTYxOWU1NDI4ODYxNjBiNjE0OV8xLTItMS0xLTA_3ae4c536-80a0-49af-9908-7d6556dc67f8">PRTH</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGFibGU6ZTYzMzUxMzc1MTE5NDE2MTllNTQyODg2MTYwYjYxNDkvdGFibGVyYW5nZTplNjMzNTEzNzUxMTk0MTYxOWU1NDI4ODYxNjBiNjE0OV8xLTQtMS0xLTA_891398f2-a677-43b2-a682-39180385e474">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNzA0_de0507b2-5921-44bf-aa63-bb283879cd60">true</dei:EntityEmergingGrowthCompany>
    <dei:EntityExTransitionPeriod
      contextRef="i7fdbb1472ef6413a99ff453d56c34560_D20210203-20210203"
      id="id3VybDovL2RvY3MudjEvZG9jOjI2N2FiNWM4MDUzNDQ2MmZhZDFhYTAxNzk4NGYyYmZlL3NlYzoyNjdhYjVjODA1MzQ0NjJmYWQxYWEwMTc5ODRmMmJmZV8xL2ZyYWc6OWQ3N2IwODI3YzZmNGIxYTgxYWI5Y2MwZmM0MTNkZmEvdGV4dHJlZ2lvbjo5ZDc3YjA4MjdjNmY0YjFhODFhYjljYzBmYzQxM2RmYV8xNjk5_27502325-ca4b-4fc1-afff-adbc91c056ea">false</dei:EntityExTransitionPeriod>
</xbrl>
