Subsequent Events (Details) - USD ($)		3 Months Ended				9 Months Ended		12 Months Ended
	Nov. 21, 2017	Feb. 03, 2018	Oct. 28, 2017	Apr. 29, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016	Jan. 28, 2017
Share Repurchases
Shares repurchased, aggregate cost						$ 24,812,000		$ 3,532,000
Dividends
Cash dividend announced on common stock (in dollars per share)			$ 0.225		$ 0.225	$ 0.675	$ 0.675
Subsequent Events
Dividends
Cash dividend announced on common stock (in dollars per share)	$ 0.225
Payment date of cash dividend	Jan. 03, 2018
Record date of cash dividend	Dec. 13, 2017
Share Repurchase Program
Share Repurchases
Number of common stock repurchased (in shares)			434,772	1,485,195	0	1,919,967	0
Shares repurchased, aggregate cost			$ 7,000,000	$ 17,800,000	$ 0	$ 24,800,000	$ 0
Share Repurchase Program | Subsequent Events
Share Repurchases
Number of common stock repurchased (in shares)		600,000
Shares repurchased, aggregate cost		$ 9,100,000