Goodwill and Other Intangible Assets Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	$ 95,723	$ 74,676
Accumulated Amortization, Intangible Assets	44,276	29,009
Intangible assets, net	51,447	45,667
Subscriber relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	41,161	41,272
Accumulated Amortization, Intangible Assets	18,853	12,882
Intangible assets, net	22,308	28,390
Merchant relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	7,920	6,600
Accumulated Amortization, Intangible Assets	6,550	6,600
Intangible assets, net	1,370	0
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	5,751	5,801
Accumulated Amortization, Intangible Assets	5,751	5,801
Intangible assets, net	0	0
Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	25,422	5,583
Accumulated Amortization, Intangible Assets	9,432	2,151
Intangible assets, net	15,990	3,432
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	15,469	15,420
Accumulated Amortization, Intangible Assets	3,690	1,575
Intangible assets, net	$ 11,779	$ 13,845