Quarterly report pursuant to Section 13 or 15(d)

Per Share Data and Stockholders' Equity - Dilutive Effect on Earnings Per Share (Detail)

v3.7.0.1
Per Share Data and Stockholders' Equity - Dilutive Effect on Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Earnings Per Share [Abstract]        
Weighted Average Shares, Basic 44,570 45,731 44,680 46,340
Weighted Average Shares, Stock compensation plans 240 193 296 183
Weighted Average Shares, Diluted 44,810 45,924 44,976 46,523
Income (Loss) From Continuing Operations, Amount $ 12,314 $ 23,043 $ 12,294 $ 37,507
Participating securities income (loss) from continuing operations non-vested restricted stock (9) (13) (9) (21)
Income (Loss) From Continuing Operations, Basic, Amount 12,305 23,030 12,285 37,486
Income (Loss) From Continuing Operations Diluted, Amount $ 12,305 $ 23,030 $ 12,285 $ 37,486
Income (Loss) From Continuing Operations, Basic, Per Share Amount $ 0.28 $ 0.50 $ 0.27 $ 0.81
Income (Loss) From Continuing Operations, Diluted, Per Share Amount $ 0.27 $ 0.50 $ 0.27 $ 0.81
Income (Loss) From Discontinued Operations, Earnings (loss), Amount $ (182) $ (221) $ (703) $ (61)
Income (Loss) From Discontinued Operations, Basic earnings (loss), Amount (182) (221) (703) (61)
Income (Loss) From Discontinued Operations, Diluted earnings (loss), Amount $ (182) (221) $ (703) $ (61)
Income (Loss) From Discontinued Operations, Basic earnings (loss), Per Share Amount $ (0.01)   $ (0.01)  
Income (Loss) From Discontinued Operations, Diluted earnings (loss), Per Share Amount     $ (0.01) $ (0.01)
Net Income (Loss), Amount $ 12,132 22,822 $ 11,591 $ 37,446
Participating securities net income (loss) non-vested restricted stock (9) (13) (9) (21)
Net Income (Loss), Basic, Amount 12,123 22,809 11,582 37,425
Net Income (Loss), Diluted, Amount $ 12,123 $ 22,809 $ 11,582 $ 37,425
Net Income (Loss), Basic, Per Share Amount $ 0.27 $ 0.50 $ 0.26 $ 0.81
Net Income (Loss), Diluted, Per Share Amount $ 0.27 $ 0.50 $ 0.26 $ 0.80