Variable Interest Entity - Summary of Assets and Liabilities Held by VIE (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Assets
Restricted cash	$ 8,305	$ 2,047
Finance receivables, net	190,327	202,042
Repossessed assets	1,500	1,924
Total assets	228,082	252,420
Liabilities
Credit facility	119,450	145,000
Accounts payable and accrued expenses	5,322	4,916
Total liabilities	122,090	147,535
Variable Interest Entity
Assets
Restricted cash	8,305	2,047
Finance receivables, net	173,084	187,584
Repossessed assets	1,339
Total assets	182,728	189,631
Liabilities
Credit facility	116,768	142,619
Accounts payable and accrued expenses	586
Total liabilities	$ 117,354	$ 142,619