Goodwill and Other Intangible Assets (Amortization Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 3,309	$ 3,847	$ 6,662	$ 7,695
Less: amortization included in discontinued operations	0	(7)	(44)	(13)
Amortization of intangible assets	3,309	3,840	6,618	7,682
Retailer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,003	1,535	2,006	3,071
Developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,700	1,700	3,400	3,400
Other
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 606	$ 612	$ 1,256	$ 1,224