Consolidated Statement of Shareholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit
Common Stock, Shares, Outstanding period beginning at Jan. 28, 2017		65,192,314
Total Shareholders' Equity period beginning at Jan. 28, 2017	$ 81,703,000	$ 652,000	$ 436,962,000	$ (355,911,000)
Net loss	(6,290,000)	$ 0	0	(6,290,000)
Repurchases of common stock, Shares		(4,400,000)
Repurchases of common stock, Value	(5,055,000)	$ (44,000)	(5,011,000)	0
Common stock issuances pursuant to equity compensation plans, Shares		360,644
Common stock issuances pursuant to equity compensation plans, Value	11,000	$ 4,000	7,000	0
Share-based payment compensation, Shares		0
Share-based payment compensation, Value	2,057,000	$ 0	2,057,000	0
Common stock and warrant issuance, Shares		4,108,273
Common stock and warrant issuance, Value	4,283,000	$ 41,000	4,242,000	0
Common Stock, Shares, Outstanding period end at Oct. 28, 2017		65,261,231
Total Shareholders' Equity period end at Oct. 28, 2017	76,709,000	$ 653,000	438,257,000	(362,201,000)
Common Stock, Shares, Outstanding period beginning at Jul. 29, 2017		65,220,233
Total Shareholders' Equity period beginning at Jul. 29, 2017	77,003,000	$ 652,000	437,449,000	(361,098,000)
Net loss	(1,103,000)	$ 0	0	(1,103,000)
Common stock issuances pursuant to equity compensation plans, Shares		40,998
Common stock issuances pursuant to equity compensation plans, Value	19,000	$ 1,000	18,000	0
Share-based payment compensation, Shares		0
Share-based payment compensation, Value	790,000	$ 0	790,000	0
Common Stock, Shares, Outstanding period end at Oct. 28, 2017		65,261,231
Total Shareholders' Equity period end at Oct. 28, 2017	$ 76,709,000	$ 653,000	438,257,000	(362,201,000)
Common Stock, Shares, Outstanding period beginning at Feb. 03, 2018	65,290,458	65,290,458.000
Total Shareholders' Equity period beginning at Feb. 03, 2018	$ 83,996,000	$ 653,000	439,111,000	(355,768,000)
Net loss	(12,183,000)	$ 0	0	(12,183,000)
Common stock issuances pursuant to equity compensation plans, Shares		1,073,387
Common stock issuances pursuant to equity compensation plans, Value	51,000	$ 11,000	40,000	0
Share-based payment compensation, Shares		0
Share-based payment compensation, Value	$ 2,206,000	$ 0	2,206,000	0
Common Stock, Shares, Outstanding period end at Nov. 03, 2018	66,363,845	66,363,845.000
Total Shareholders' Equity period end at Nov. 03, 2018	$ 74,070,000	$ 664,000	441,357,000	(367,951,000)
Common Stock, Shares, Outstanding period beginning at Aug. 04, 2018		66,287,786
Total Shareholders' Equity period beginning at Aug. 04, 2018	82,338,000	$ 663,000	440,469,000	(358,794,000)
Net loss	(9,157,000)	$ 0	0	(9,157,000)
Common stock issuances pursuant to equity compensation plans, Shares		76,059
Common stock issuances pursuant to equity compensation plans, Value	67,000	$ 1,000	66,000	0
Share-based payment compensation, Shares		0
Share-based payment compensation, Value	$ 822,000	$ 0	822,000	0
Common Stock, Shares, Outstanding period end at Nov. 03, 2018	66,363,845	66,363,845.000
Total Shareholders' Equity period end at Nov. 03, 2018	$ 74,070,000	$ 664,000	$ 441,357,000	$ (367,951,000)