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Related Party Transactions (Narrative) (Details)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Related Party Transaction [Line Items]    
Amount paid for rental $ 1.0 $ 1.0
DNI [Member]    
Related Party Transaction [Line Items]    
Percentage of direct shareholding 16.00% 16.00%