Net (Loss) Income Per Share - Computation of Basic and Diluted Net (Loss) Income Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:
Loss from continuing operations	$ (25,838)	$ (42,264)	$ (31,379)
Income from discontinued operations, net of income taxes	967	87,962	963
Net (loss) income and comprehensive (loss) income	$ (24,871)	$ 45,698	$ (30,416)
Denominator:
Weighted average common shares outstanding	50,909	50,112	50,105
Effect of dilutive securities:
Stock options
Diluted weighted average common shares outstanding	50,909	50,112	50,105
Basic and diluted net (loss) income per common share
Continuing operations	$ (0.51)	$ (0.84)	$ (0.63)
Discontinued operations	$ 0.02	$ 1.75	$ 0.02
Net (loss) income per common share	$ (0.49)	$ 0.91	$ (0.61)