Quarterly report pursuant to Section 13 or 15(d)

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

v3.4.0.3
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, 2016
Mar. 31, 2015
Earnings Per Share [Abstract]    
Weighted Average Shares, Basic 46,950 50,854
Weighted Average Shares, Stock compensation plans 172 549
Weighted Average Shares, Diluted 47,122 51,403
Income (Loss) From Continuing Operations, Amount $ 14,464 $ 14,389
Participating securities income (loss) from continuing operations non-vested restricted stock and restricted stock units (6) (5)
Income (Loss) From Continuing Operations, Basic, Amount 14,458 14,384
Income (Loss) From Continuing Operations Diluted, Amount $ 14,458 $ 14,384
Income (Loss) From Continuing Operations, Basic, Per Share Amount $ 0.31 $ 0.28
Income (Loss) From Continuing Operations, Diluted, Per Share Amount $ 0.31 $ 0.28
Dilutive effect on earnings per share $ 160 $ (422)
Income (Loss) From Discontinued Operations, Basic earnings (loss), Amount 160 (422)
Income (Loss) From Discontinued Operations, Diluted earnings (loss), Amount 160 $ (422)
Income (Loss) From Discontinuing 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 14,624 $ 13,967
Net Income (Loss), Basic, Amount 14,618 13,962
Net Income (Loss), Diluted, Amount $ 14,618 $ 13,962
Net Income (Loss), Basic, Per Share Amount $ 0.31 $ 0.27
Net Income (Loss), Diluted, Per Share Amount $ 0.31 $ 0.27