Goodwill And Other Intangible Assets Intangible Assets (Amortization Expenses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Total amortization of intangible assets	$ 3,191	$ 2,019	$ 7,085	$ 3,330
Retailer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortization of intangible assets	1,568	1,614	4,713	2,843
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortization of intangible assets	1,133	0	1,133	0
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortization of intangible assets	$ 490	$ 405	$ 1,239	$ 487