Goodwill and Other Intangible Assets (Gross Amount Of Other Intangible Assets And The Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 63,307	$ 67,097
Retailer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	53,295	53,295
Accumulated amortization	(28,215)	(27,212)
Intangible assets, net	$ 25,080	26,083
Retailer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	5 years
Retailer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Developed technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 36,000	36,000
Accumulated amortization	(18,410)	(16,544)
Intangible assets, net	$ 17,590	19,456
Developed technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	3 years
Developed technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	5 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 20,000	20,000
Accumulated amortization	(3,783)	(3,133)
Intangible assets, net	$ 16,217	16,867
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	5 years
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Other
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 10,800	10,800
Accumulated amortization	(6,380)	(6,109)
Intangible assets, net	$ 4,420	$ 4,691
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	40 years