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
Mar. 31, 2017
Mar. 31, 2016
Earnings Per Share [Abstract]    
Weighted Average Shares, Basic 44,791 46,950
Weighted Average Shares, Stock compensation plans   172
Weighted Average Shares, Diluted 44,791 47,122
Income (Loss) From Continuing Operations, Amount $ (20) $ 14,464
Participating securities income (loss) from continuing operations non-vested restricted stock   (6)
Income (Loss) From Continuing Operations, Basic, Amount (20) 14,458
Income (Loss) From Continuing Operations Diluted, Amount (20) $ 14,458
Income (Loss) From Continuing Operations, Basic, Per Share Amount   $ 0.31
Income (Loss) From Continuing Operations, Diluted, Per Share Amount   $ 0.31
Income (Loss) From Discontinued Operations, Earnings (loss), Amount (521) $ 160
Income (Loss) From Discontinued Operations, Basic earnings (loss), Amount (521) 160
Income (Loss) From Discontinued Operations, Diluted earnings (loss), Amount $ (521) 160
Income (Loss) From Discontinued Operations, Basic earnings (loss), Per Share Amount $ (0.01)  
Income (Loss) From Discontinued Operations, Diluted earnings (loss), Per Share Amount $ (0.01)  
Net Income (Loss), Amount $ (541) 14,624
Net Income (Loss), Basic, Amount (541) 14,618
Net Income (Loss), Diluted, Amount $ (541) $ 14,618
Net Income (Loss), Basic, Per Share Amount $ (0.01) $ 0.31
Net Income (Loss), Diluted, Per Share Amount $ (0.01) $ 0.31