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Subsequent Events (Details) - $ / shares
3 Months Ended
Aug. 27, 2015
Jul. 24, 2015
Aug. 19, 2015
Cash Dividend Declared      
Subsequent Event [Line Items]      
Dividends payable, date declared   Aug. 19, 2015  
Dividends payable, date to be paid   Sep. 21, 2015  
Dividends payable, date of record   Sep. 07, 2015  
Subsequent event | Cash Dividend Declared      
Subsequent Event [Line Items]      
Dividends payable, amount per share     $ 0.310
Board of Directors Chairman and Executive Chair of the Company [Member] | Subsequent event      
Subsequent Event [Line Items]      
Contracted term length 2 years