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Subsequent Events (Details) - $ / shares
3 Months Ended 6 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Subsequent Event [Line Items]        
Dividends declared, in dollars per share $ 0.0500 $ 0.0175 $ 0.0700 $ 0.0350