Finance Receivables - Information regarding delinquency rates with respect to contracts and direct loans (Details 4) - Finance receivables - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020
Accounts Notes And Loans Receivable [Line Items]
Balance Outstanding	$ 180,650		$ 208,627
Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Balance Outstanding	15,721	$ 13,909	11,684
Total	$ 408	$ 445	$ 404
Total (in percentage)	2.60%	3.20%	3.46%
Contract Portfolio
Accounts Notes And Loans Receivable [Line Items]
Balance Outstanding	$ 164,929	$ 170,195	$ 196,943
Total	$ 10,316	$ 9,657	$ 14,539
Total (in percentage)	6.26%	5.67%	7.39%
30 - 59 days \| Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total	$ 285	$ 253	$ 244
Total (in percentage)	1.81%	1.82%	2.09%
30 - 59 days \| Contract Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total	$ 7,087	$ 6,289	$ 9,584
Total (in percentage)	4.30%	3.70%	4.87%
60 - 89 days \| Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total	$ 70	$ 101	$ 81
Total (in percentage)	0.45%	0.73%	0.69%
60 - 89 days \| Contract Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total	$ 2,575	$ 2,430	$ 3,595
Total (in percentage)	1.56%	1.43%	1.83%
90 - 119 days \| Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total	$ 53	$ 81	$ 79
Total (in percentage)	0.34%	0.58%	0.68%
90 - 119 days \| Contract Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total	$ 644	$ 896	$ 1,334
Total (in percentage)	0.39%	0.53%	0.68%
Over 120 days \| Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total		$ 10
Total (in percentage)		0.00%
Over 120 days \| Contract Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total	$ 10	$ 42	$ 26
Total (in percentage)	0.01%	0.02%	0.01%