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Income Taxes - Details of Reconciliation of Income Taxes (Detail)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
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%
Nondeductible items 0.80% 1.90% 4.50%
Other, net (0.10%) (0.80%) (1.70%)
Change in valuation allowance (2.40%) (177.90%) (39.50%)
Effective income tax rate 35.30% (139.80%) 0.30%