Finance Receivables, Net - Aging of Finance Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Mar. 31, 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		$ 189,832
Fair value premium on non-PCD finance receivables	$ 0	22,981	$ 0
Finance receivables, amortized cost	190,703	212,813	$ 188,327
Year 2022
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		57,747
Finance receivables, amortized cost		100,615
Year 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		120,013
Finance receivables, amortized cost				$ 13,737
Year 2020
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		12,072
Year 2023
Financing Receivable, Past Due [Line Items]
Finance receivables, amortized cost	76,351
Total past due
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		33,046
Finance receivables, amortized cost	30,996
Total past due | Year 2022
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		4,536
Finance receivables, amortized cost		21,150
Total past due | Year 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		26,175
Finance receivables, amortized cost				3,002
Total past due | Year 2020
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		2,335
Total past due | Year 2023
Financing Receivable, Past Due [Line Items]
Finance receivables, amortized cost	6,844
Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		15,395
Finance receivables, amortized cost	15,105
Financial Asset, 1 to 29 Days Past Due | Year 2022
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		3,083
Finance receivables, amortized cost		8,873
Financial Asset, 1 to 29 Days Past Due | Year 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		11,180
Finance receivables, amortized cost				1,311
Financial Asset, 1 to 29 Days Past Due | Year 2020
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		1,132
Financial Asset, 1 to 29 Days Past Due | Year 2023
Financing Receivable, Past Due [Line Items]
Finance receivables, amortized cost	4,921
Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		8,521
Finance receivables, amortized cost	8,182
Financial Asset, 30 to 59 Days Past Due | Year 2022
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		1,048
Finance receivables, amortized cost		5,822
Financial Asset, 30 to 59 Days Past Due | Year 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		6,917
Finance receivables, amortized cost				843
Financial Asset, 30 to 59 Days Past Due | Year 2020
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		556
Financial Asset, 30 to 59 Days Past Due | Year 2023
Financing Receivable, Past Due [Line Items]
Finance receivables, amortized cost	1,517
Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		9,130
Finance receivables, amortized cost	7,709
Financial Asset, 60 to 89 Days Past Due | Year 2022
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		405
Finance receivables, amortized cost		6,455
Financial Asset, 60 to 89 Days Past Due | Year 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		8,078
Finance receivables, amortized cost				848
Financial Asset, 60 to 89 Days Past Due | Year 2020
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		647
Financial Asset, 60 to 89 Days Past Due | Year 2023
Financing Receivable, Past Due [Line Items]
Finance receivables, amortized cost	406
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		156,786
Finance receivables, amortized cost	159,707
Financial Asset, Not Past Due | Year 2022
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		53,211
Finance receivables, amortized cost		79,465
Financial Asset, Not Past Due | Year 2021
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		93,838
Finance receivables, amortized cost				$ 10,735
Financial Asset, Not Past Due | Year 2020
Financing Receivable, Past Due [Line Items]
Finance receivable, before allowance for credit loss, premium and discount		$ 9,737
Financial Asset, Not Past Due | Year 2023
Financing Receivable, Past Due [Line Items]
Finance receivables, amortized cost	$ 69,507