Finance Receivables - Information regarding delinquency rates with respect to contracts and direct loans (Details 3) - Finance receivables - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	$ 228,994	$ 296,936
Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	7,999	7,745
Total	$ 307	$ 406
Total (in percentage)	3.84%	5.24%
Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	$ 220,995	$ 289,191
Total	$ 22,350	$ 25,331
Total (in percentage)	10.11%	8.76%
31 - 60 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 197	$ 189
Total (in percentage)	2.46%	2.44%
31 - 60 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 14,897	$ 15,828
Total (in percentage)	6.74%	5.47%
61 - 90 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 79	$ 77
Total (in percentage)	0.99%	0.99%
61 - 90 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 5,155	$ 5,711
Total (in percentage)	2.33%	1.97%
Over 90 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 31	$ 62
Total (in percentage)	0.39%	0.80%
Over 90 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,288	$ 2,124
Total (in percentage)	1.04%	0.73%
Over 120 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		$ 78
Total (in percentage)	0.00%	1.01%
Over 120 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 10	$ 1,668
Total (in percentage)	0.00%	0.58%