Basis of Presentation - Schedule of Intangible Assets – Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite-lived Intangible Assets [Roll Forward]
Carrying Value	$ 40,892
5 Arches LLC And CoreVest
Finite-lived Intangible Assets [Roll Forward]
Intangible Assets at Acquisition	94,600	$ 81,300
Accumulated amortization	(53,708)	(39,739)
Carrying Value	$ 40,892	$ 41,561
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	$ 56,300	$ 45,300
Accumulated amortization	(21,547)	(14,291)
Carrying Value	$ 34,753	$ 31,009
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	(13,877)	(10,257)
Carrying Value	$ 4,223	$ 7,843
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	$ 11,400	$ 9,500
Accumulated amortization	(9,817)	(7,597)
Carrying Value	$ 1,583	$ 1,903
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	$ 4,400	$ 4,000
Accumulated amortization	(4,067)	(3,194)
Carrying Value	$ 333	$ 806
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	(1,800)	(1,800)
Carrying Value	$ 0	$ 0
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	(2,600)	(2,600)
Carrying Value	$ 0	$ 0
Weighted Average Amortization Period (in years)	1 year	1 year