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Net Income (Loss) per Share - Earnings Attributable to Common Shareholders and Weighted Average Common Shares Outstanding (Detail) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Continuing operations        
Net income (loss) from continuing operations $ 17,439 $ (57,394) $ 33,661 $ (60,237)
Less: Net (income) loss attributable to noncontrolling interests (610) 115 (1,330) 5
Earnings (loss) available for diluted earnings per share 16,829 (57,279) 32,331 (60,232)
Less: Undistributed net income from continuing operations allocated to participating securities 3,152 0 6,035 0
Earnings (loss) from continuing operations available to common shareholders for basic earnings per share 13,677 (57,279) 26,296 (60,232)
Discontinued operations        
Loss from discontinued operations, net of taxes (7,164) (106,937) (17,428) (146,649)
Less: Undistributed net income from discontinued operations allocated to participating securities 1,342 0 3,253 0
Earnings (loss) from discontinued operations available to common shareholders for basic earnings per share $ (5,822) $ (106,937) $ (14,175) $ (146,649)
Denominator:        
Weighted average common shares outstanding — basic 34,099 34,299 34,234 34,248
Weighted average common shares upon conversion of participating securities 7,857 0 7,857 0
Dilutive effect of stock options, restricted stock and equity-settled awards 304 0 243 0
Total weighted average shares outstanding — diluted 42,260 34,299 42,334 34,248
Anti-dilutive awards excluded from diluted weighted average shares (in shares) 2,001 10,933 2,146 10,835