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Dividends (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Dividends Payable [Line Items]        
Dividends Declared Per Share (in dollars per share) $ 0 $ 0.12 $ 0.24 $ 0.36
Dividends     $ 2,378  
First Quarter Dividend [Member]        
Dividends Payable [Line Items]        
Record Date     Sep. 12, 2017  
Payment Date     Sep. 26, 2017  
Type     Quarterly  
Dividends Declared Per Share (in dollars per share)     $ 0.12  
Dividends     $ 1,187  
Second Quarter Dividend [Member]        
Dividends Payable [Line Items]        
Record Date     Dec. 14, 2017  
Payment Date     Dec. 28, 2017  
Type     Quarterly  
Dividends Declared Per Share (in dollars per share)     $ 0.12  
Dividends     $ 1,191