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Investment In FC Organizational Products (Narrative) (Details) - FC Organizational Products [Member] - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 06, 2017
Feb. 28, 2017
Feb. 28, 2017
Aug. 31, 2016
Related Party Transaction [Line Items]        
Percent ownership interest in related party   19.50% 19.50%  
Receivable from related party   $ 3.0 $ 3.0 $ 3.2
Discount on receivable from related party   0.7 $ 0.7 $ 0.8
Discount rate on long-term receivable from related party     15.00%  
Cash from related parties   $ 0.7    
Subsequent Event [Member]        
Related Party Transaction [Line Items]        
Cash from related parties $ 1.4