Basis of Presentation - Schedule of Intangible Assets – Activity (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward]
Accumulated Amortization at December 31, 2021	$ (15,000)	$ (16,000)
Carrying Value	41,561
5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	81,300	81,300
Accumulated Amortization at December 31, 2021	(39,739)	(24,435)
Carrying Value	$ 41,561	$ 56,865
Weighted Average Amortization Period (in years)	6 years	6 years
Borrower network \| 5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	$ 45,300	$ 45,300
Accumulated Amortization at December 31, 2021	(14,291)	(7,819)
Carrying Value	$ 31,009	$ 37,481
Weighted Average Amortization Period (in years)	7 years	7 years
Broker network \| 5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	$ 18,100	$ 18,100
Accumulated Amortization at December 31, 2021	(10,257)	(6,637)
Carrying Value	$ 7,843	$ 11,463
Weighted Average Amortization Period (in years)	5 years	5 years
Non-compete agreements \| 5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	$ 9,500	$ 9,500
Accumulated Amortization at December 31, 2021	(7,597)	(4,431)
Carrying Value	$ 1,903	$ 5,069
Weighted Average Amortization Period (in years)	3 years	3 years
Tradenames \| 5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	$ 4,000	$ 4,000
Accumulated Amortization at December 31, 2021	(3,194)	(1,860)
Carrying Value	$ 806	$ 2,140
Weighted Average Amortization Period (in years)	3 years	3 years
Developed technology \| 5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	$ 1,800	$ 1,800
Accumulated Amortization at December 31, 2021	(1,800)	(1,088)
Carrying Value	$ 0	$ 712
Weighted Average Amortization Period (in years)	2 years	2 years
Loan administration fees on existing loan assets \| 5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	$ 2,600	$ 2,600
Accumulated Amortization at December 31, 2021	(2,600)	(2,600)
Carrying Value	$ 0	$ 0
Weighted Average Amortization Period (in years)	1 year	1 year

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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