Subsequent Events - Schedule of Condensed Unaudited Pro Forma Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Assets
Cash and cash equivalents	$ 18,982	$ 454
Finance receivables held for sale, at a lower of amortized cost or fair value	38,773
Finance receivables held for investment, net	0	106,919
Repossessed assets held for sale, at lower of carrying value or fair value less cost to sell	668
Prepaid expenses and other assets	438	316
Income taxes receivable	902	946
Property and equipment, net	75	222
Total assets	59,838	110,348
Liabilities and shareholders’ equity
Contingent liability	0
Accounts payable, accrued expenses, and other liabilities	996	1,603
Total liabilities	996	30,539
Commitments and contingencies (see Note 11)
Shareholders’ equity:
Preferred stock	0	0
Common stock	35,267	35,223
Treasury stock	(76,794)	(76,794)
Retained earnings	100,369	121,380
Total shareholders’ equity	58,842	79,809	$ 116,386
Total liabilities and shareholders’ equity	59,838	$ 110,348
Transaction Accounting Adjustments [Member]
Assets
Cash and cash equivalents	40,634
Finance receivables held for sale, at a lower of amortized cost or fair value	(38,650)
Repossessed assets held for sale, at lower of carrying value or fair value less cost to sell	(668)
Prepaid expenses and other assets	0
Income taxes receivable	0
Total assets	1,316
Liabilities and shareholders’ equity
Contingent liability	2,620
Accounts payable, accrued expenses, and other liabilities	0
Total liabilities	2,620
Shareholders’ equity:
Preferred stock	0
Common stock	0
Treasury stock	0
Retained earnings	(1,304)
Total shareholders’ equity	(1,304)
Total liabilities and shareholders’ equity	1,316
Pro Forma [Member]
Assets
Cash and cash equivalents	59,616
Finance receivables held for sale, at a lower of amortized cost or fair value	123
Repossessed assets held for sale, at lower of carrying value or fair value less cost to sell	0
Prepaid expenses and other assets	438
Income taxes receivable	902
Property and equipment, net	75
Total assets	61,154
Liabilities and shareholders’ equity
Contingent liability	2,620
Accounts payable, accrued expenses, and other liabilities	996
Total liabilities	3,616
Shareholders’ equity:
Preferred stock	0
Common stock	35,267
Treasury stock	(76,794)
Retained earnings	99,065
Total shareholders’ equity	57,538
Total liabilities and shareholders’ equity	$ 61,154