Securitizations Net - Summary of Outstanding Balance Net of Discounts and Deals Costs of Securities and Effective Interest Rate (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Securitizations, net	$ 2,477,226	$ 1,558,163	$ 1,911,879
Average outstanding balance	$ 2,175,263	$ 1,545,969
Effective interest rate	4.08%	4.83%
Securitizations
Debt Instrument [Line Items]
Interest expense - portfolio related	$ 44,428	$ 37,333