Purchased Receivables - Summary of Components of Net Purchased Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Purchased Receivables [Abstract]
Purchased receivables	$ 11,876	$ 13,507
Reserve for purchased receivable losses	(169)	(181)	$ (265)	$ (289)
Total	$ 11,707	$ 13,326