Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Declared Quarterly Cash Dividends on Common Stock (Details)

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Shareholders' Equity - Declared Quarterly Cash Dividends on Common Stock (Details) - $ / shares
3 Months Ended
Oct. 25, 2017
Jul. 26, 2017
Apr. 26, 2017
Jan. 26, 2017
Sep. 30, 2017
Subsequent Event [Line Items]          
Dividends per share (in dollars per share)   $ 0.12 $ 0.075 $ 0.075 $ 0.12
Subsequent Event          
Subsequent Event [Line Items]          
Dividends per share (in dollars per share) $ 0.12