Consolidated Statement of Shareholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit
Common Stock, Shares, Outstanding period beginning at Feb. 03, 2018		65,290,458
Total Shareholders' Equity period beginning at Feb. 03, 2018	$ 83,996,000	$ 653,000	$ 439,111,000	$ (355,768,000)
Net loss	(2,986,000)	$ 0	0	(2,986,000)
Common stock issuances pursuant to equity compensation awards, Shares		297,879
Common stock issuances pursuant to equity compensation awards, Value	(100,000)	$ 3,000	(103,000)	0
Share-based payment compensation	820,000	$ 0	820,000	0
Common Stock, Shares, Outstanding period end at May. 05, 2018		65,588,337
Total Shareholders' Equity period end at May. 05, 2018	$ 81,730,000	$ 656,000	439,828,000	(358,754,000)
Common Stock, Shares, Outstanding period beginning at Feb. 02, 2019	67,919,349	67,919,349.000
Total Shareholders' Equity period beginning at Feb. 02, 2019	$ 64,951,000	$ 679,000	442,197,000	(377,925,000)
Net loss	(20,990,000)	$ 0	0	(20,990,000)
Common stock issuances pursuant to equity compensation awards, Shares		311,636
Common stock issuances pursuant to equity compensation awards, Value	(8,000)	$ 3,000	(11,000)	0
Share-based payment compensation	966,000	$ 0	966,000	0
Common stock and warrant issuance, Shares		8,000,000
Common stock and warrant issuance, Value	$ 6,018,000	$ 80,000	5,938,000	0
Common Stock, Shares, Outstanding period end at May. 04, 2019	76,230,985	76,230,985.000
Total Shareholders' Equity period end at May. 04, 2019	$ 50,937,000	$ 762,000	$ 449,090,000	$ (398,915,000)