Purchased Receivables - Allowance on Net Purchase Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Purchased Receivable Allowance for Loan Loss Reserve [Roll Forward]
Balance at beginning of period	$ 247	$ 242	$ 289	$ 273
Charge-offs	(400)	(54)	(588)	(446)
Balance at end of period	224	483	224	483
Purchased Receivable
Purchased Receivable Allowance for Loan Loss Reserve [Roll Forward]
Charge-offs	0	0	0	(240)
Recoveries	0	0	30	3
Charge-offs net of recoveries	0	0	30	(237)
Reserve for (recovery from) purchased receivables	$ (23)	$ 241	$ (95)	$ 447