Goodwill and Other Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Components of other intangible assets
Other Intangible Assets, Gross	$ 62,255	$ 60,890
Less: accumulated amortization	(41,239)	(27,150)
Other Intangible Assets , Net	21,016	33,740
Customer-related intangibles [Member]
Components of other intangible assets
Other Intangible Assets, Gross	58,204	57,933
Developed technology [Member]
Components of other intangible assets
Other Intangible Assets, Gross	3,237	2,352
Marketing trade name [Member]
Components of other intangible assets
Other Intangible Assets, Gross	$ 814	$ 605