Segment Reporting - Revenue and EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting
Revenues	$ 56,008	$ 86,393
EBITDA	2,798	17,674
U.S. Debit and Credit
Segment Reporting
EBITDA	7,630	18,922
U.S. Prepaid Debit
Segment Reporting
EBITDA	1,785	3,267
U.K. Limited
Segment Reporting
EBITDA	325	219
Other
Segment Reporting
EBITDA	(6,942)	(4,734)
Operating Segments | U.S. Debit and Credit
Segment Reporting
Revenues	39,508	65,091
Operating Segments | U.S. Prepaid Debit
Segment Reporting
Revenues	9,784	12,341
Operating Segments | U.K. Limited
Segment Reporting
Revenues	5,587	6,232
Operating Segments | Other
Segment Reporting
Revenues	2,503	3,142
Intersegment eliminations
Segment Reporting
Revenues	$ (1,374)	$ (413)