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Related Party Transactions (Narrative) (Details) - DNI [Member]
$ in Millions
9 Months Ended
Mar. 31, 2019
USD ($)
Related Party Transaction [Line Items]  
Percentage of direct shareholding 38.00%
Leased Building From Related Party [Member]  
Related Party Transaction [Line Items]  
Amount paid for rental $ 1.0
Executive Officers [Member]  
Related Party Transaction [Line Items]  
Percentage of direct shareholding 16.00%