Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets (Details 2)

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Goodwill and Intangible Assets (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Amortization expense for intangible assets        
Amortization expense $ 2,650 $ 1,802 $ 5,802 $ 4,405