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Goodwill (Narrative) (Details) - USD ($)
6 Months Ended 12 Months Ended
Sep. 30, 2018
Mar. 31, 2018
Goodwill [Line Items]    
Decrease in goodwill related to sell of segment $ 6,245,000  
Goodwill impairment   $ 0
Household Cleaning    
Goodwill [Line Items]    
Decrease in goodwill related to sell of segment $ 6,245,000