XML 114 R97.htm IDEA: XBRL DOCUMENT v3.4.0.3
Net Income Per Common Share - Schedule of Reconciliation of Numerator and Denominator of Earnings Per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share [Abstract]      
Net income (loss) $ 85,377 $ 66,157 $ (27,117)
Less: non-forfeitable dividends on restricted stock 9    
Net income (loss) available to common shareholders $ 85,368 $ 66,157 $ (27,117)
Weighted average common shares outstanding 77,066,459 78,337,152 78,914,310
Weighted average potential dilutive common shares [1],[2] 114,664 553,987  
Weighted average common shares outstanding-assuming dilution 77,181,123 78,891,139 78,914,310
Net income (loss) per common share - basic $ 1.11 $ 0.84 $ (0.34)
Net income (loss) per common share - diluted $ 1.11 $ 0.84 $ (0.34)
[1] For the year ended December 31, 2013, 2,325,209 potential common shares consisting of common stock under the assumed exercise of stock options and restricted stock awards using the treasury stock method were not included in the computation of the diluted net income (loss) per share since their inclusion would have an antidilutive effect.
[2] Potential common shares consist of common stock issuable under the assumed exercise of stock options, restricted stock and RSUs awards using the treasury stock method.