XML 33 R21.htm IDEA: XBRL DOCUMENT v3.20.2
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Earnings Per Share [Abstract]            
Net income $ 25,873 $ 32,918 $ 33,048 $ 42,655 $ 58,791 $ 75,703
Denominator:            
Weighted-average common shares for calculating basic earnings per share (shares) 41,440   43,081   41,676 43,298
Stock options and nonvested stock awards (shares) 91   175   93 158
Weighted-average common shares for calculating diluted earnings per share (shares) 41,531   43,256   41,769 43,456
Earnings per share:            
Basic (USD per share) $ 0.62   $ 0.77   $ 1.41 $ 1.75
Diluted (USD per share) $ 0.62   $ 0.76   $ 1.41 $ 1.74