Purchased Receivables - Allowance on Net Purchase Receivables (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Purchased Receivable Allowance for Loan Loss Reserve [Roll Forward]
Balance at beginning of period	$ 169,000	$ 265,000	$ 181,000	$ 289,000
Charge-offs	135,000	0	869,000	188,000
Balance at end of period	163,000	247,000	163,000	247,000
Purchased Receivable
Purchased Receivable Allowance for Loan Loss Reserve [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	30,000
Charge-offs net of recoveries	0	0	0	30,000
Reserve for (recovery from) purchased receivables	$ (6,000)	$ (18,000)	$ (18,000)	$ (72,000)