Annual report pursuant to Section 13 and 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
12 Months Ended
Jan. 30, 2019
Oct. 24, 2018
Jul. 26, 2018
Apr. 25, 2018
Jan. 31, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Subsequent Event [Line Items]                
Dividends per share (in dollars per share)   $ 0.15 $ 0.15 $ 0.12 $ 0.12 $ 0.54 $ 0.39 $ 0.25
Subsequent Event                
Subsequent Event [Line Items]                
Dividends per share (in dollars per share) $ 0.15