Goodwill and Intangibles (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Intangible assets and accumulated amortization balances
Gross Carrying Amount	$ 155,652	$ 155,682
Accumulated Amortization	(38,928)	(23,991)
Net Carrying Amount	116,724	131,691
Weighted Average Useful Life (Years)	7 years 6 months	8 years 1 month 6 days
Customer Relationships [Member]
Intangible assets and accumulated amortization balances
Gross Carrying Amount	135,741	138,576
Accumulated Amortization	(34,184)	(21,267)
Net Carrying Amount	101,557	117,309
Weighted Average Useful Life (Years)	7 years 8 months 12 days	8 years 7 months 6 days
Developed technology [Member]
Intangible assets and accumulated amortization balances
Gross Carrying Amount	9,574	9,503
Accumulated Amortization	(4,143)	(2,521)
Net Carrying Amount	5,431	6,982
Weighted Average Useful Life (Years)	3 years 10 months 24 days	4 years 9 months 18 days
Other [Member]
Intangible assets and accumulated amortization balances
Gross Carrying Amount	10,337	7,603
Accumulated Amortization	(601)	(203)
Net Carrying Amount	$ 9,736	$ 7,400