Basis of Presentation - Intangible Assets Activity (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (3,000)	$ (3,000)
Carrying Value	25,657
5 Arches LLC and CoreVest
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	94,600
Accumulated Amortization	(68,943)
Carrying Value	$ 25,657
Weighted Average Amortization Period (in years)	6 years
5 Arches LLC and CoreVest \| Borrower network
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	$ 56,300
Accumulated Amortization	(31,601)
Carrying Value	$ 24,699
Weighted Average Amortization Period (in years)	7 years
5 Arches LLC and CoreVest \| Broker network
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	$ 18,100
Accumulated Amortization	(18,100)
Carrying Value	$ 0
Weighted Average Amortization Period (in years)	5 years
5 Arches LLC and CoreVest \| Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	$ 11,400
Accumulated Amortization	(10,608)
Carrying Value	$ 792
Weighted Average Amortization Period (in years)	3 years
5 Arches LLC and CoreVest \| Tradenames
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	$ 4,400
Accumulated Amortization	(4,234)
Carrying Value	$ 166
Weighted Average Amortization Period (in years)	3 years
5 Arches LLC and CoreVest \| Developed technology
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	$ 1,800
Accumulated Amortization	(1,800)
Carrying Value	$ 0
Weighted Average Amortization Period (in years)	2 years
5 Arches LLC and CoreVest \| Loan administration fees on existing loan assets
Finite-Lived Intangible Assets [Line Items]
Intangible Assets at Acquisition	$ 2,600
Accumulated Amortization	(2,600)
Carrying Value	$ 0
Weighted Average Amortization Period (in years)	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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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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