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NET INCOME PER SHARE - Basic and Diluted Net Income Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Basic net income (loss) per share:        
Net (loss) income from continuing operations $ (31,881) $ 8,990 $ (8,129) $ 15,890
Net income (loss) from discontinued operations 0 817 (10,370) 948
Net (loss) income $ (31,881) $ 9,807 $ (18,499) $ 16,838
Weighted average common shares outstanding (in shares) 35,279 32,450 33,682 32,374
Basic net income (loss) per common share from continuing operations (in dollars per share) $ (0.90) $ 0.28 $ (0.24) $ 0.49
Basic net income (loss) per common share from discontinued operations (in dollars per share) 0.00 0.03 (0.31) 0.03
Basic net income (loss) per common share (in dollars per share) $ (0.90) $ 0.31 $ (0.55) $ 0.52
Diluted net income per share:        
Net (loss) income from continuing operations $ (31,881) $ 8,990 $ (8,129) $ 15,890
Net income (loss) from discontinued operations 0 817 (10,370) 948
Net (loss) income $ (31,881) $ 9,807 $ (18,499) $ 16,838
Weighted average common shares outstanding (in shares) 35,279 32,450 33,682 32,374
Effect of dilutive securities:        
2016 Convertible notes (in shares) 0 0 0 0
Stock options and restricted stock (in shares) 0 456 0 470
Weighted average common shares for diluted earnings per share (in shares) 35,279 32,906 33,682 32,844
Diluted net income (loss) per common share from continuing operations (in dollars per share) $ (0.90) $ 0.27 $ (0.24) $ 0.48
Diluted net income (loss) per common share from discontinued operations (in dollars per share) 0.00 0.02 (0.31) 0.03
Diluted net income (loss) per common share (in dollars per share) $ (0.90) $ 0.29 $ (0.55) $ 0.51