Fair Value Disclosures - Summary of financial instruments not measured at fair value (Details 1) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and restricted cash	$ 4,775	$ 32,977
Finance receivables	168,600	170,318
Repossessed assets:	658	685
Credit facility	55,000	88,300
Note payable	3,244	3,244
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and restricted cash	4,775	32,977
Finance receivables	168,600	170,318
Repossessed assets:	658	685
Credit facility	55,000	88,300
Note payable	3,244	3,244
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and restricted cash	4,775	32,977
Finance receivables	0	0
Repossessed assets:	0	0
Credit facility	0	0
Note payable	3,244	3,244
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and restricted cash	0	0
Finance receivables	0	0
Repossessed assets:	0	0
Credit facility	0	0
Note payable	0	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and restricted cash	0	0
Finance receivables	168,600	170,318
Repossessed assets:	658	685
Credit facility	55,000	88,300
Note payable	$ 0	$ 0