Property, Equipment and Improvements, Net (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019	Feb. 01, 2020
Property, equipment and improvements
Total property, equipment and improvements, gross	$ 159,764,000		$ 159,764,000		$ 159,319,000
Less accumulated depreciation and amortization	(137,915,000)		(137,915,000)		(134,367,000)
Total property, equipment and improvements, net	21,849,000		21,849,000		24,952,000
Impairment of store assets	0	$ 311,000	264,000	$ 311,000	311,000
Store leasehold improvements
Property, equipment and improvements
Total property, equipment and improvements, gross	50,023,000		50,023,000		49,894,000
Store furniture and fixtures
Property, equipment and improvements
Total property, equipment and improvements, gross	69,963,000		69,963,000		69,735,000
Corporate office and distribution center furniture, fixtures and equipment
Property, equipment and improvements
Total property, equipment and improvements, gross	6,463,000		6,463,000		6,463,000
Computer and point of sale hardware and software
Property, equipment and improvements
Total property, equipment and improvements, gross	32,959,000		32,959,000		32,952,000
Construction in progress
Property, equipment and improvements
Total property, equipment and improvements, gross	$ 356,000		$ 356,000		$ 275,000