Accounts Receivable - Reserve For Uncollectible Overdrawn Accounts Activity (Details) - Reserve for uncollectible overdrawn accounts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Uncollectible Overdrawn Accounts [Roll Forward]
Balance, beginning of period	$ 13,888	$ 14,471	$ 11,932
Fees	79,810	67,348	69,912
Purchase transactions	6,641	12,442	7,233
Charge-offs	(83,455)	(80,373)	(74,606)
Balance, end of period	$ 16,884	$ 13,888	$ 14,471