Goodwill and Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	$ 154,171	$ 152,580
Accumulated Amortization, Intangible Assets	121,915	109,665
Net Carrying Value, Intangible Assets	32,256	42,915
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	61,011	59,340
Accumulated Amortization, Intangible Assets	45,649	40,002
Net Carrying Value, Intangible Assets	15,362	19,338
Merchant relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	12,489	12,015
Accumulated Amortization, Intangible Assets	9,713	8,475
Net Carrying Value, Intangible Assets	2,776	3,540
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	11,909	11,534
Accumulated Amortization, Intangible Assets	9,062	8,004
Net Carrying Value, Intangible Assets	2,847	3,530
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	36,480	38,388
Accumulated Amortization, Intangible Assets	32,399	30,197
Net Carrying Value, Intangible Assets	4,081	8,191
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	18,117	17,259
Accumulated Amortization, Intangible Assets	14,572	14,020
Net Carrying Value, Intangible Assets	3,545	3,239
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	14,165	14,044
Accumulated Amortization, Intangible Assets	10,520	8,967
Net Carrying Value, Intangible Assets	$ 3,645	$ 5,077
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years