Securitizations and Variable Interest Entities - Summary of Activity Related to Unconsolidated VIEs (Details) - Unconsolidated - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fair value of consideration received:
Cash	$ 18,051	$ 0	$ 18,051	$ 5,320
Asset-backed securities retained	153,229	0	153,229	2,180
Other assets (liabilities)	2,299	0	2,299	(3,794)
Total consideration	173,579	0	173,579	3,706
Deconsolidation of debt	0	0	0	36,072
Fair value of loans sold	(171,559)	0	(171,559)	(39,519)
Gain on sales of loans	2,020	0	2,020	259
Cash proceeds from continuing involvement:
Servicing and other administrative fees	862	2,407	1,876	5,512
Interest received on asset-backed securities retained	$ 2,406	$ 2,384	$ 3,594	$ 5,079