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Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Income Tax Disclosure [Abstract]    
(Provision) benefit for income taxes $ (2,609,000) $ 5,142,000
Excess tax deductions associated with stock compensation costs 2,400,000 1,200,000
Length of second tax exemption period 5 years  
Complementary tax rate 12.00%  
Amount of complementary tax exemption $ 31,600,000 $ 26,500,000
Gaming tax 39.00%