Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Stock Repurchase Program and Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended			6 Months Ended
	Aug. 15, 2017	May 16, 2017	Feb. 07, 2017	Oct. 28, 2017	Jul. 29, 2017	Oct. 29, 2016	Jul. 29, 2017	Jul. 30, 2016	Apr. 10, 2017
Stockholders' Equity
Cash dividends declared per share	$ 0.08	$ 0.08	$ 0.06	$ 0.08		$ 0.06	$ 0.14	$ 0.12
Stock Repurchase Program
Stockholders' Equity
Stock Repurchase Program, Authorized Amount									$ 25.0
Stock Repurchased During Period Shares					1,197,000
Treasury Stock, Value, Acquired, Cost Method					$ 24.9
Additional shares which could be repurchased					$ 0.1		$ 0.1