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Income (Loss) Per Share - Summary of Computation of Basic and Diluted Earning Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Earnings Per Share [Abstract]        
Net income (loss) $ 73,297 $ 13,109 $ 58,425 $ (84,746)
Weighted average common shares outstanding — basic 54,200 54,156 54,178 43,329
Dilutive effect of securities 230 8 186  
Weighted average common shares outstanding — diluted 54,430 54,164 54,364 43,329
Basic $ 1.35 $ 0.24 $ 1.08 $ (1.96)
Diluted $ 1.35 $ 0.24 $ 1.07 $ (1.96)
Anti-dilutive potentially issuable securities excluded from diluted common shares 4,250 3,538 4,282 3,891