Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Details)

v3.20.2
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Aug. 31, 2020
May 31, 2020
Feb. 29, 2020
Nov. 30, 2019
Aug. 31, 2019
May 31, 2019
Feb. 28, 2019
Nov. 30, 2018
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Income Tax Disclosure Additional Details [Table] [Line Items]                        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense                 $ 4,500 $ 3,700 $ 3,000  
Unrecognized Tax Benefits, Period Increase (Decrease), Reasonably Possible in Future Period                 $ 1,700      
Federal statutory rate                 21.00% 21.00% 25.70%  
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense                 $ 9,400 $ 1,700 $ 20,400  
Impairment, Non-Deductible for Income Tax Purposes                 300 14,000 700  
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount                 4,000 3,500 13,300  
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction                 12,300 2,900 11,800  
Net Benefit, Taxable Liquidations of Foreign Subsidiaries                 4,100   1,500  
Operating Loss Carryforward $ 77,600               $ 77,600      
Percent of Revenue (excluding impairment charge) from foreign jurisdictions                 75.00%      
Income taxes, net of refunds                 $ 13,200 15,400 (1,500)  
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 89,300               89,300      
Additional Income Tax Provision                 2,400      
Non-Cash Impairment charges - domestic earnings                 (2,600) 9,000    
Non-Cash Impairment charges - foreign earnings                 (600) 13,800    
Impairment and divestiture (benefit) charges 400 $ (1,400) $ (800) $ (1,400) $ 6,200 $ (13,000) $ 6,100 $ 23,500 (3,159) 22,827 2,987 $ 3,000
Deferred income taxes [Member]                        
Income Tax Disclosure Additional Details [Table] [Line Items]                        
Deferred Income Tax Liabilities, Net 1,700       1,600       1,700 1,600    
Other Noncurrent Assets [Member]                        
Income Tax Disclosure Additional Details [Table] [Line Items]                        
Deferred Income Tax Assets, Net $ 22,600       $ 18,400       22,600 18,400    
Valuation Allowance of Deferred Tax Assets                        
Income Tax Disclosure Additional Details [Table] [Line Items]                        
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense                 9,383 43,693 27,504  
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction                 $ 12,337 $ 2,864 $ 11,836