Annual report pursuant to Section 13 and 15(d)

Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail)

v3.10.0.1
Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Numerator (Basic and Diluted):                      
Net income $ 26,225 $ 20,854 $ 22,167 $ 18,011 $ 8,480 $ 15,475 $ 15,569 $ 12,000 $ 87,257 $ 51,524 $ 64,657
Denominator:                      
Weighted Average Common Shares Issued and Outstanding                 38,637 38,142 37,637
Deduct: Unvested RSAs                 (30) (29) (36)
Add: Fully vested DSUs                 542 875 1,298
Weighted Average Common Shares Outstanding                 39,149 38,988 38,899
Basic earnings per common share $ 0.67 $ 0.53 $ 0.57 $ 0.46 $ 0.22 $ 0.40 $ 0.40 $ 0.31 $ 2.23 $ 1.32 $ 1.66
Weighted Average Common Shares Outstanding from above                 39,149 38,988 38,899
Add: Dilutive effect of RSUs, RSAs & ESPP Plan                 234 112 136
Weighted Average Common Shares Outstanding                 39,383 39,100 39,035
Diluted earnings per common share $ 0.66 $ 0.53 $ 0.56 $ 0.46 $ 0.22 $ 0.39 $ 0.40 $ 0.31 $ 2.22 $ 1.32 $ 1.66
Antidilutive shares excluded from diluted earnings per common share                 137 512 516