Basis of Presentation - Narrative (Details) $ in Thousands		3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 01, 2022 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) partnership	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2018 partnership	Dec. 31, 2019 USD ($)
Variable Interest Entity [Line Items]
Number of partnerships consolidated | partnership				2			2
Goodwill recognized from acquisition				$ 23,373	$ 0
Goodwill impairment expense		$ 89,000		0	0	$ 88,675
Net interest income				155,454	148,177	123,911
Non-interest income (loss)				(162,679)	393,804	(475,354)
Net (loss) income				$ (163,520)	319,613	(581,847)
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Number of partnerships consolidated | partnership				2
VIE, ownership interest rate (as a percent)				80.00%
Net interest income				$ 115,743	89,497	81,050
Non-interest income (loss)				(145,560)	90,193	(167,856)
Net (loss) income				(31,701)	177,718	$ (87,480)
Riverbend
Variable Interest Entity [Line Items]
Cash	$ 44,126
Earn out period	2 years
Potential future payments on loans	$ 25,300
Contingent consideration expense	0			0
Intangible assets	$ 13,300
Amortization of intangible assets			$ 1,000
Goodwill recognized from acquisition				23,000
Goodwill deductible for tax purposes			23,000	23,000
Net interest income			1,000
Non-interest income (loss)			2,000
Net (loss) income			$ (2,000)
5 Arches
Variable Interest Entity [Line Items]
Intangible assets								$ 25,000
CoreVest
Variable Interest Entity [Line Items]
Intangible assets								$ 57,000
5 Arches LLC And CoreVest
Variable Interest Entity [Line Items]
Acquisition related costs				1,000
Amortization of intangible assets				$ 53,708	$ 39,739