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Subsequent Events Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jul. 31, 2017
Jun. 09, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Subsequent Event [Line Items]          
Quarterly cash dividend declared, common stock   $ 0.13      
Dividends, Common Stock, Cash     $ 4,119 $ 4,014 $ 4,055
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Quarterly cash dividend declared, common stock $ 0.14        
Percent Increase in Dividends Declared 8.00%