Revenue - Interest Income and Fair Value Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Interest income	$ 22,180	$ 5,070	$ 66,288	$ 12,020
Interest expense	(3,050)	(269)	(6,322)	(2,796)
Unrealized gain (loss) and other adjustments, net	(20,069)	11,360	(70,855)	14,470
Realized gain (loss) on sale of loans, net	(21,176)	1,868	(45,255)	6,159
Total fair value and other adjustments	(41,245)	13,228	(116,110)	20,629
Total interest income and fair value adjustments, net	(22,115)	18,029	(56,144)	29,853
Income from capital market program, net	$ 0	$ 12,700	$ 0	$ 15,200