Earnings Per Share (Calculation of Basic and Diluted Earnings Per Share) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Net income (loss) available to common shareholders	$ (7,770)	$ (11,674)
Weighted average common shares outstanding used to compute basic EPS	35,840	35,343
Dilutive effect of stock based awards	0	0
Weighted average common shares outstanding used to compute diluted EPS	35,840	35,343
Basic EPS	$ (0.22)	$ (0.33)
Diluted EPS	$ (0.22)	$ (0.33)