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Subsequent Events Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Oct. 24, 2017
Sep. 30, 2017
[1]
Sep. 30, 2016
[2]
Subsequent Event [Line Items]      
Dividends, Common Stock, Cash   $ 1,078 $ 1,033
Subsequent Event [Member]      
Subsequent Event [Line Items]      
Quarterly cash dividend declared, common stock $ 0.14    
[1] Cash dividends of $0.14 per share were paid in the quarter ended September 30, 2017.
[2] Cash dividends of $0.13 per share were paid in the quarter ended September 30, 2016.