Purchased Receivables - Summary Of Components Of Net Purchased Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Purchased Receivables [Abstract]
Purchased receivables	$ 24,467	$ 14,596
Reserve for purchased receivable losses	(94)	(190)	$ (200)	$ (171)
Total	$ 24,373	$ 14,406