Settlement Processing Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Settlement processing assets:
Receivable from card networks	$ 534,871	$ 195,817
Receivable from merchants	101,802	52,513
Totals	636,673	248,330
Settlement processing obligations:
Settlement liabilities	(631,128)	(320,492)
Merchant reserves	(98,651)	(107,836)
Totals	$ (729,779)	$ (428,328)