Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015	Apr. 30, 2016
Company's assets and liabilities measured at fair value on a nonrecurring basis
Impairment of long-lived assets	$ 1,017	$ 931	$ 4,453	$ 1,697
Fair Value Measurements Nonrecurring
Company's assets and liabilities measured at fair value on a nonrecurring basis
Long-Lived Assets Held and Used	618		618		$ 694
Total Losses	1,017		1,017		3,436
Fair Value Measurements Nonrecurring | Level 1
Company's assets and liabilities measured at fair value on a nonrecurring basis
Long-Lived Assets Held and Used	0		0		0
Fair Value Measurements Nonrecurring | Level 2
Company's assets and liabilities measured at fair value on a nonrecurring basis
Long-Lived Assets Held and Used	0		0		0
Fair Value Measurements Nonrecurring | Level 3
Company's assets and liabilities measured at fair value on a nonrecurring basis
Long-Lived Assets Held and Used	$ 618		$ 618		$ 694