Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Reconciliation of Earnings Per Share (Details)

v3.3.1.900
Earnings Per Share - Reconciliation of Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Feb. 29, 2016
Feb. 28, 2015
Feb. 29, 2016
Feb. 28, 2015
Earnings Per Share [Abstract]        
Net income (loss) $ (188,057) $ (12,464) $ (196,911) $ (686)
Weighted average common shares outstanding, assuming conversion of proportionate voting shares - Basic (in shares) 45,566,680 44,699,821 45,558,534 43,559,710
Assumed conversion of dilutive stock options and awards (in shares) 0 0 0 0
Diluted weighted average common shares outstanding (in shares) 45,566,680 44,699,821 45,558,534 43,559,710
Basic earnings (loss) per common share (in dollars per share) $ (4.13) $ (0.28) $ (4.32) $ (0.02)
Diluted earnings (loss) per common share (in dollars per share) $ (4.13) $ (0.28) $ (4.32) $ (0.02)
Anti-dilutive stock options and awards excluded from diluted earnings (loss) per share calculation (in shares) 808,879 2,398,589 1,307,187 2,440,610