Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

v3.8.0.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Earnings Per Share [Abstract]        
Net income (loss) $ (8,513) $ 13,313 $ (13,198) $ 32,361
Weighted average common shares (in shares) 32,593 32,388 32,536 32,476
Dilutive effect of stock based awards (in shares) 0 593 0 601
Diluted Shares (in shares) 32,593 32,981 32,536 33,077
Basic earnings per share (dollars per share) $ (0.26) $ 0.41 $ (0.41) $ 1.00
Diluted earnings per share (dollars per share) $ (0.26) $ 0.40 $ (0.41) $ 0.98
Diluted earnings per share (in shares) 0 0 0 138