Quarterly report pursuant to Section 13 or 15(d)

Components of Calculation of Basic and Diluted Earnings Per Share (Details)

v3.19.3
Components of Calculation of Basic and Diluted Earnings Per Share (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Earnings Per Share [Abstract]                
Net income (loss) $ 54,362 $ (38,697) $ 16,276 $ 10,295 $ 51,625 $ (2,521) $ 67,290 $ 24,050
Weighted-average shares – basic 15,110   15,062       15,105 15,054
Effect of dilutive securities 50   282       60 224
Weighted-average shares – diluted 15,160   15,344       15,165 15,278