Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation Basis of Presentation (Details)

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Basis of Presentation Basis of Presentation (Details) - USD ($)
$ in Thousands
May 31, 2019
Feb. 28, 2019
Aug. 31, 2018
May 31, 2018
Feb. 28, 2018
Aug. 31, 2017
Accounting Policies [Abstract]            
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets $ 100          
Condensed Statement of Income Captions [Line Items]            
Foreign currency translation adjustments 138,331   $ 158,497      
Pension and other postretirement benefit plans, net of tax 15,221   15,748      
Total shareholders’ equity (607,424) $ (585,630) (558,712) $ (601,028) $ (589,281) $ (500,539)
AOCI Attributable to Parent [Member]            
Condensed Statement of Income Captions [Line Items]            
Total shareholders’ equity $ 153,552 $ 139,752 $ 174,245 $ 164,180 $ 143,227 $ 227,261