Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share Disclosure [Line Items]
Net (loss) income	$ (676)	$ 1,673
Total weighted-average basic shares	24,908,000	24,460,000
Dilutive securities:
Total weighted-average diluted shares	24,908,000	25,254,000
Net (loss) income per share:
Basic (usd per share)	$ (0.03)	$ 0.07
Diluted (usd per share)	$ (0.03)	$ 0.07
Weighted average number of antidilutive stock options and restricted stock excluded from the calculation of earnings per share (shares)		0
Restricted stock
Dilutive securities:
Dilutive securities (shares)	0	665,000
Net (loss) income per share:
Weighted average number of antidilutive stock options and restricted stock excluded from the calculation of earnings per share (shares)	107,793
Employee Stock Purchase Plan
Dilutive securities:
Dilutive securities (shares)	0	7,000
Options
Dilutive securities:
Dilutive securities (shares)	0	122,000
Net (loss) income per share:
Weighted average number of antidilutive stock options and restricted stock excluded from the calculation of earnings per share (shares)	150,000