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Subsequent Event (Details) - $ / shares
3 Months Ended 9 Months Ended
May 05, 2017
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Subsequent Event [Line Items]          
Dividends declared per common share (in dollars per share)   $ 0.115 $ 0.1 $ 0.345 $ 0.3
Subsequent Event          
Subsequent Event [Line Items]          
Dividends declared per common share (in dollars per share) $ 0.1320        
Subsequent Event | Revolver | Line of Credit          
Subsequent Event [Line Items]          
Interest rate reduction 0.50%