Fair Value Measurement - Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Loans	$ 1,010,421	$ 252,477
Notes receivable and residual certificates	6,181	8,288
Loan servicing assets	36,467	18,388
Total assets	1,053,069	279,153
Liabilities
Loan servicing liabilities	3,968	8,780
Trailing fee liabilities	4,852	4,315
Total liabilities	8,820	13,095
Fair Value, Inputs, Level 1
Assets
Loans	0	0
Notes receivable and residual certificates	0	0
Loan servicing assets	0	0
Total assets	0	0
Liabilities
Loan servicing liabilities	0	0
Trailing fee liabilities	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 2
Assets
Loans	0	0
Notes receivable and residual certificates	0	0
Loan servicing assets	0	0
Total assets	0	0
Liabilities
Loan servicing liabilities	0	0
Trailing fee liabilities	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 3
Assets
Loans	1,010,421	252,477
Notes receivable and residual certificates	6,181	8,288
Loan servicing assets	36,467	18,388
Total assets	1,053,069	279,153
Liabilities
Loan servicing liabilities	3,968	8,780
Trailing fee liabilities	4,852	4,315
Total liabilities	$ 8,820	$ 13,095