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Investment In FC Organizational Products (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2020
Feb. 29, 2020
May 31, 2020
Nov. 04, 2019
Aug. 31, 2019
Related Party Transaction [Line Items]          
Receivable from related party       $ 3.2  
Note receivable purchased from FCOP's third-party bank       $ 2.6  
Minimum royalties $ 1.3   $ 1.3    
Term of license agreement     30 years    
License Contract [Member]          
Related Party Transaction [Line Items]          
Capitalized contract cost $ 3.2   $ 3.2    
FCOP [Member]          
Related Party Transaction [Line Items]          
Percent ownership interest in related party 19.50%   19.50%    
Receivable from related party         $ 1.0
FPC [Member]          
Related Party Transaction [Line Items]          
Receivable from related party $ 1.3   $ 1.3    
Cash from related parties   $ 1.9      
Royalty revenue $ 0.3   $ 1.6