Goodwill and Other Intangible Assets (Amortization Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 3,790	$ 3,309	$ 7,580	$ 6,662
Less: amortization included in discontinued operations	0	0	0	(44)
Amortization of intangible assets	3,790	3,309	7,580	6,618
Retailer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,002	1,003	2,005	2,006
Developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,867	1,700	3,733	3,400
Trade names
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	650	300	1,300	600
Other
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 271	$ 306	$ 542	$ 656