Revenue - Interest Income and Fair Value Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Interest income	$ 28,974	$ 3,545	$ 44,108	$ 6,951
Interest expense	(2,313)	(1,497)	(3,272)	(2,527)
Fair value and other adjustments, net	(56,844)	4,601	(74,865)	7,400
Total interest income and fair value adjustments, net	(30,183)	6,649	(34,029)	11,824
Gain (loss) on transfer of loans	$ (25,400)	1,400	$ (24,100)	4,300
Income from capital market program, net		$ 1,400		$ 2,500