Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income (loss) before income taxes:    
Loss before income taxes $ (4,761) $ (539)
Components of provision (benefit) for income taxes    
Income tax benefit $ (530) $ 0
Reconciliation from the U.S. statutory federal income tax rate to the effective income tax rate    
U.S. federal statutory rate (as a percent) 34.00%  
Effective income tax rate (as a percent) 11.00% 0.00%