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Income Taxes - Additional Information (Detail) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Total deferred tax valuation allowance     $ 82,500,000
Effective tax provision 220,000 (12,402,000)  
Effective tax rate 0.50% (38.50%)  
Cumulative effect of federal and state valuation losses 38.70%    
Decrease in unrecognized tax positions 2,500,000    
Possible interest and accrued penalties $ 2,800,000