Purchased Receivables - Allowance on Net Purchase Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Purchased Receivable Allowance for Loan Loss Reserve [Roll Forward]
Balance, beginning of period			$ 94
Charge-offs	$ (804)	$ (68)	(969)	$ (177)
Balance, end of period	93		93
Purchased Receivable
Purchased Receivable Allowance for Loan Loss Reserve [Roll Forward]
Balance, beginning of period	99	141	94	190
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Charge-offs net of recoveries	0	0	0	0
Reserve (benefit) for purchased receivables	(6)	(43)	(1)	(92)
Balance, end of period	$ 93	$ 98	$ 93	$ 98