Earnings (Loss) Per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 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	10,500,000	4,400,000	5,900,000	4,200,000
Common stock outstanding	117,249,990		117,249,990		119,033,770