Net Income Per Share - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Line Items]
Exercisable options outstanding that enable to purchase shares	800,000		800,000
Restricted Stock [Member]
Earnings Per Share [Line Items]
Shares with dilutive effect and included in computation of diluted income (loss) per share	5,000	27,000	5,000	27,000
Equity Option [Member]
Earnings Per Share [Line Items]
Shares with dilutive effect and included in computation of diluted income (loss) per share	291,000		299,000
Equity Option [Member]
Earnings Per Share [Line Items]
Options excluded from computation of diluted income (loss) per share due to anti-dilutive effect	350,000	1,300,000	350,000	1,300,000