Annual report pursuant to Section 13 and 15(d)

Earnings per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail)

v3.8.0.1
Earnings per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share [Abstract]                      
Net income $ 11,497 $ 14,923 $ 14,457 $ 13,783 $ 14,416 $ 13,121 $ 14,148 $ 14,804 $ 54,660 $ 56,489 $ 53,823
Less: income allocated to unvested restricted shares                 339 457  
Income from continuing operations, net of taxes                     53,823
Income (loss) from discontinued operations                     145
Net Income (Loss) Available to Common Stockholders, Basic                 54,321 56,032 53,678
Income allocated to common shares                 $ 54,321 $ 56,032 $ 53,678
Weighted-average shares for basic EPS (shares)                 32,071,585 31,899,582 31,788,215
Effect of dilutive securities - options, warrants and unvested restricted stock (shares)                 178,333 149,122 88,605
Weighted-average shares for diluted EPS                 32,249,918 32,048,704 31,876,820
Net income per share, basic (in usd per share)                 $ 1.71 $ 1.77  
Net income per share, diluted (in usd per share)                 1.70 1.76  
Income from continuing operations, net of taxes (in usd per share)                     $ 1.69
Effect of dilutive securities (in USD per share)                 0.01 0.01  
Loss from discontinued operations, net of taxes (in usd per share)                     0.00
Basic earnings per share (in usd per share) $ 0.36 $ 0.46 $ 0.45 $ 0.43 $ 0.45 $ 0.41 $ 0.44 $ 0.46 1.70 1.76 1.69
Income from continuing operations, net of taxes (in usd per share)                     1.68
Net loss from discontinued operation per diluted share (in usd per share)                     0.00
Diluted earnings per share (in usd per share) $ 0.36 $ 0.46 $ 0.45 $ 0.43 $ 0.45 $ 0.41 $ 0.44 $ 0.46 $ 1.69 $ 1.75 $ 1.68