Goodwill and Other Intangible Assets (Gross Amount Of Other Intangible Assets And The Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 67,097	$ 64,691
Retailer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	53,295	53,295
Intangible assets, accumulated amortization	(27,212)	(23,200)
Intangible assets, net	$ 26,083	30,095
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	34,000
Intangible assets, accumulated amortization	(16,544)	(9,633)
Intangible assets, net	$ 19,456	24,367
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	6,000
Intangible assets, accumulated amortization	(3,133)	(1,700)
Intangible assets, net	$ 16,867	4,300
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 intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 10,800	10,800
Intangible assets, accumulated amortization	(6,109)	(4,871)
Intangible assets, net	$ 4,691	$ 5,929
Other intangible assets | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
Other intangible assets | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	40 years