Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income tax provision and the effective tax rate        
Income before income tax provision $ 5,941 $ 1,741 $ 16,098 $ 4,277
Income tax provision $ 2,173 $ 435 $ 5,812 $ 1,312
Effective tax rate (as a percent) 36.60% 25.00% 36.10% 30.70%
U.S. federal statutory tax rate 35.00% 34.00% 35.00% 34.00%