Finance Receivables - Information regarding delinquency rates with respect to contracts and direct loans (Details 4) - Finance receivables - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	$ 221,876	$ 263,560
Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	9,480	7,465
Total	$ 390	$ 379
Total (in percentage)	4.11%	5.08%
Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	$ 212,396	$ 256,095
Total	$ 20,919	$ 28,764
Total (in percentage)	9.85%	11.23%
30 - 59 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 219	$ 162
Total (in percentage)	2.31%	2.17%
30 - 59 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 13,981	$ 17,399
Total (in percentage)	6.58%	6.79%
60 - 89 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 115	$ 122
Total (in percentage)	1.21%	1.63%
60 - 89 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 4,950	$ 7,132
Total (in percentage)	2.33%	2.78%
90 - 119 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 56	$ 27
Total (in percentage)	0.59%	0.36%
90 - 119 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 1,946	$ 2,190
Total (in percentage)	0.92%	0.86%
Over 120 days | Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		$ 68
Total (in percentage)		0.91%
Over 120 days | Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 42	$ 2,043
Total (in percentage)	0.02%	0.80%