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Income Taxes - Details of Reconciliation of Income Taxes (Detail)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Federal statutory rate 35.00% 35.00% 35.00%
Increase (decrease) in taxes resulting from:      
State and local taxes 2.00% 2.00% 2.00%
Contingency accrual adjustment     (1.20%)
Nondeductible items 1.90% 4.50% 5.90%
Other, net (0.80%) (1.70%) 3.80%
Change in valuation allowance (177.90%) (39.50%) (42.80%)
Effective income tax rate (139.80%) 0.30% 2.70%