Net (Loss) Income Per Share - Additional Information (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity option
Earnings Per Share [Line Items]
Exercisable options outstanding that enable to purchase shares	750	825	800
Shares with dilutive effect and included in computation of diluted income (loss) per share	127	319	298
Options excluded from computation of diluted income (loss) per share due to anti-dilutive effect	220	260	295
Restricted stock
Earnings Per Share [Line Items]
Exercisable options outstanding that enable to purchase shares	169	141
Shares with dilutive effect and included in computation of diluted income (loss) per share	17	26