XML 61 R42.htm IDEA: XBRL DOCUMENT v3.20.2
Basis Of Presentation And Summary Of Significant Accounting Policies (Fair Value Of Financial Instruments) (Narrative) (Details) - USD ($)
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Carrying value of senior notes $ 113,098,000 $ 60,221,000  
Level 2 [Member] | Recurring [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Assets 0    
Liabilities 0    
Level 2 [Member] | Nonrecurring [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Assets 0 0 $ 0
Liabilities 0 $ 0 $ 0
Level 2 [Member] | Senior Notes [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Fair value of senior notes 20,900,000    
Carrying value of senior notes $ 18,000,000.0