Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v2.4.0.8
Income Taxes - Additional Information (Details) (USD $)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations [Abstract]          
Income tax expense $ 904,000 $ 8,033,000 $ 12,825,000 $ 35,358,000  
Effective tax rate   36.10% 37.10% 35.90%  
Federal statutory income tax rate 35.00%        
Unrecognized tax benefits         9,500,000
Proceeds from income tax refunds     $ 3,000,000   $ 59,100,000