Business Combinations - Additional Information (Details)													1 Months Ended	6 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 29, 2021 USD ($)	Sep. 17, 2021 USD ($)	Jun. 22, 2021 USD ($)	Jun. 15, 2021 USD ($)	Nov. 02, 2020 USD ($) EarnoutPayment	Jul. 23, 2020 USD ($)	Apr. 06, 2020 USD ($)	Feb. 10, 2020 USD ($)	Oct. 14, 2019 USD ($) EarnoutPayment	Aug. 13, 2019 USD ($)	Jul. 11, 2019 USD ($) shares	Oct. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2019 USD ($)	Jul. 10, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Goodwill	$ 824,081,632											$ 339,911,400		$ 824,081,632	$ 824,081,632	$ 824,081,632	$ 458,970,255		$ 389,660,519	$ 119,529,202	$ 119,529,202
Payments made to acquire business																$ 1,500,000	$ 4,070,549
Revenue															31,300,000
Net income															$ 0.0
Hawk Parent Holdings LLC
Business Acquisition [Line Items]
Merger agreement, description																The amount of cash consideration paid to selling Hawk Parent members at the closing of the Business Combination was equal to the following: (i) the total cash and cash equivalents of Thunder Bridge (including funds in its trust account after the redemption of its public stockholders and the proceeds of any debt or equity financing), minus (ii) the amount of Thunder Bridge’s unpaid expenses and obligations, plus (iii) the cash and cash equivalents of Hawk Parent as of immediately prior to the effective time of the Business Combination (excluding restricted cash), minus (iv) the amount of unpaid transaction expenses of Hawk Parent as of the closing of the Business Combination, minus (v) the amount of the indebtedness and other debt-like items of Hawk Parent and its subsidiaries as of the closing of the Business Combination, minus (vi) the amount of change of control and similar payments payable to employees of Hawk Parent in connection with the Business Combination, minus (vii) an amount of cash reserves equal to $10,000,000, minus (viii) a cash escrow of $150,000, minus (ix) an amount equal to $2,000,000 to be held by a representative of the selling Hawk Parent members, minus (x) the cash payment required in connection with the Warrant Amendment, minus (xi) an amount required to be deposited on the balance sheet of Hawk Parent in connection with the Business Combination.
Amount of equal cash reserve for merger consideration												10,000,000
Cash escrow												150,000
Amount to be held by representative for merger consideration												2,000,000
Goodwill												339,911,400
Goodwill expected to be deductible for tax purposes												279,200,000
Cash Consideration												260,811,062
Payments made to acquire business												$ 558,705,050
TriSource
Business Acquisition [Line Items]
Goodwill											$ 30,868,261
Goodwill expected to be deductible for tax purposes											32,200,000
Cash Consideration											60,235,090
Earnout payment													$ 4,000,000.0
Payments made to acquire business											62,485,090
TriSource | Maximum
Business Acquisition [Line Items]
Contingent earn-out right to be received											$ 5,000,000.0
APS
Business Acquisition [Line Items]
Goodwill										$ 25,926,861
Goodwill expected to be deductible for tax purposes										21,700,000
Cash Consideration										30,465,454
Earnout payment								$ 14,300,000		$ 30,000,000.0
Number of cash earn-out payments | EarnoutPayment										3
Payments made to acquire business										$ 49,046,003
Ventanex
Business Acquisition [Line Items]
Goodwill									$ 12,200,461
Goodwill expected to be deductible for tax purposes									8,300,000
Cash Consideration									35,939,129
Contingent earn-out right to be received																		$ 900,000
Earnout payment																$ 12,700,000
Payments made to acquire business									40,739,129
Ventanex | Maximum
Business Acquisition [Line Items]
Contingent earn-out right to be received									$ 14,000,000.0
cPayPlus
Business Acquisition [Line Items]
Goodwill							$ 6,713,646
Goodwill expected to be deductible for tax purposes							8,200,000
Cash Consideration							7,956,963
Earnout payment			$ 8,000,000.0
Payments made to acquire business							14,456,963
cPayPlus | Maximum
Business Acquisition [Line Items]
Contingent earn-out right to be received							$ 8,000,000.0
CPS Payment Services LLC and Media Payments, LLC
Business Acquisition [Line Items]
Goodwill						$ 43,300,000
Goodwill expected to be deductible for tax purposes						38,800,000
Cash Consideration						$ 83,900,000
Number of cash earn-out payments | EarnoutPayment						2
CPS Payment Services LLC and Media Payments, LLC | Maximum
Business Acquisition [Line Items]
Contingent earn-out right to be received						$ 15,000,000.0
Billing Tree
Business Acquisition [Line Items]
Goodwill					$ 293,799,895
Goodwill expected to be deductible for tax purposes					47,700,000
Cash Consideration					277,521,139
Payments made to acquire business					505,771,139
Kontrol
Business Acquisition [Line Items]
Goodwill				$ 1,591,223
Goodwill expected to be deductible for tax purposes				1,100,000
Cash Consideration				7,439,373
Contingent earn-out right to be received				3,000,000.0
Earnout payment																$ 900,000
Payments made to acquire business				7,939,373
Revenue														1,700,000
Net income														$ 600,000
Kontrol | Maximum
Business Acquisition [Line Items]
Contingent earn-out right to be received				$ 10,500,000
Payix
Business Acquisition [Line Items]
Goodwill		$ 71,231,039
Goodwill expected to be deductible for tax purposes		0
Cash Consideration		95,627,972
Contingent earn-out right to be received		20,000,000.0
Earnout payment		2,900,000
Payments made to acquire business		98,477,972
Revenue	100,000
Net income	$ 0.0
Payix | Maximum
Business Acquisition [Line Items]
Contingent earn-out right to be received		$ 20,000,000.0
Class V Common Stock
Business Acquisition [Line Items]
Number of shares exchanged for limited liability interest | shares												1
Class A Common Stock | Billing Tree
Business Acquisition [Line Items]
Business combination, stock transaction					$ 10,000,000
Post Merger Repay Units
Business Acquisition [Line Items]
Percentage of tax savings												100.00%
Post Merger Repay Units | Class A Common Stock
Business Acquisition [Line Items]
Number of shares exchanged for limited liability interest | shares												1