Finance Receivables - Information regarding delinquency rates with respect to contracts and direct loans (Details 4) - Finance receivables - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	$ 211,515	$ 246,653
Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	11,423	8,470
Total	$ 525	$ 387
Total (in percentage)	4.60%	4.57%
Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance Outstanding	$ 200,092	$ 238,183
Total	$ 25,067	$ 33,487
Total (in percentage)	12.53%	14.06%
30 - 59 days \| Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 331	$ 189
Total (in percentage)	2.90%	2.23%
30 - 59 days \| Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 16,748	$ 19,552
Total (in percentage)	8.37%	8.21%
60 - 89 days \| Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 123	$ 95
Total (in percentage)	1.08%	1.12%
60 - 89 days \| Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 5,993	$ 7,577
Total (in percentage)	3.00%	3.18%
90 - 119 days \| Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 68	$ 35
Total (in percentage)	0.60%	0.41%
90 - 119 days \| Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,279	$ 3,919
Total (in percentage)	1.14%	1.65%
Over 120 days \| Direct Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 3	$ 68
Total (in percentage)	0.03%	0.80%
Over 120 days \| Contract Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 47	$ 2,439
Total (in percentage)	0.02%	1.02%