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Earnings (Loss) Per Share - Additional Information (Detail) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Earnings Per Share [Abstract]          
Options to purchase shares, restricted share awards, and contingently issuable shares excluded from diluted net earnings (loss) per share computation 9,900,000 3,600,000 6,100,000 4,000,000  
Common stock outstanding 117,277,201   117,277,201   119,033,770