Condensed Consolidated Statement of Shareholders Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Accumulated Deficit
Balance, beginning of period at Feb. 03, 2018	$ 140,761	$ 167,501	$ (26,740)
Balance, beginning of period (in shares) at Feb. 03, 2018		15,977,239
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases (in shares)		10,969
Employee stock purchases	$ 82	$ 82
Exercise of stock options (in shares)	20,834
Exercise of stock options	$ 23	23
Stock-based compensation expense	393	$ 393
Repurchase and retirement of common stock (in shares)		(315,548)
Repurchase and retirement of common stock	(2,972)		(2,972)
Net loss	(882)		(882)
Balance, end of period at May. 05, 2018	137,405	$ 167,999	(30,594)
Balance, end of period (in shares) at May. 05, 2018		15,693,494
Balance, beginning of period at Feb. 03, 2018	140,761	$ 167,501	(26,740)
Balance, beginning of period (in shares) at Feb. 03, 2018		15,977,239
Increase (Decrease) in Stockholders Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0
Repurchase and retirement of common stock (in shares)	(1,082,117)
Net loss	$ (10,377)
Balance, end of period at Nov. 03, 2018	$ 121,250	$ 168,725	(47,475)
Balance, end of period (in shares) at Nov. 03, 2018	15,063,439	15,063,439
Balance, beginning of period at May. 05, 2018	$ 137,405	$ 167,999	(30,594)
Balance, beginning of period (in shares) at May. 05, 2018		15,693,494
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases (in shares)		7,306
Employee stock purchases	79	$ 79
Stock Issued During Period, Shares, Restricted Stock Award, Gross		108,900
Net Share Settlement Of Stock Options And Restricted Stock, Shares		(137,478)
Net Share Settlement Of Stock Options And Restricted Stock Value	$ (378)	$ (378)
Exercise of stock options (in shares)	146,692
Exercise of stock options	$ 0	0
Stock-based compensation expense	498	$ 498
Repurchase and retirement of common stock (in shares)		(77,096)
Repurchase and retirement of common stock	(832)		(832)
Net loss	(6,715)		(6,715)
Balance, end of period at Aug. 04, 2018	130,057	$ 168,198	(38,141)
Balance, end of period (in shares) at Aug. 04, 2018		15,741,818
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases (in shares)		9,971
Employee stock purchases	77	$ 77
Net Share Settlement Of Stock Options And Restricted Stock, Shares		(8,877)
Net Share Settlement Of Stock Options And Restricted Stock Value	$ 0	$ 0
Exercise of stock options (in shares)	10,000
Exercise of stock options	$ 0	0
Stock-based compensation expense	$ 450	$ 450
Repurchase and retirement of common stock (in shares)	(689,473)	(689,473)
Repurchase and retirement of common stock	$ (6,554)		(6,554)
Net loss	(2,780)		(2,780)
Balance, end of period at Nov. 03, 2018	$ 121,250	$ 168,725	(47,475)
Balance, end of period (in shares) at Nov. 03, 2018	15,063,439	15,063,439
Balance, beginning of period at Feb. 02, 2019	$ 130,800	$ 169,477	(38,677)
Balance, beginning of period (in shares) at Feb. 02, 2019	14,504,824	14,504,824
Increase (Decrease) in Stockholders Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (331)		(331)
Employee stock purchases (in shares)		6,880
Employee stock purchases	68	$ 68
Stock-based compensation expense	560	$ 560
Repurchase and retirement of common stock (in shares)		(287,056)
Repurchase and retirement of common stock	(2,368)		(2,368)
Net loss	(8,921)		(8,921)
Balance, end of period at May. 04, 2019	119,808	$ 170,105	(50,297)
Balance, end of period (in shares) at May. 04, 2019		14,224,648
Balance, beginning of period at Feb. 02, 2019	$ 130,800	$ 169,477	(38,677)
Balance, beginning of period (in shares) at Feb. 02, 2019	14,504,824	14,504,824
Increase (Decrease) in Stockholders Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (331)
Repurchase and retirement of common stock (in shares)	(807,275)
Net loss	$ (48,347)
Balance, end of period at Nov. 02, 2019	$ 80,573	$ 171,585	(91,012)
Balance, end of period (in shares) at Nov. 02, 2019	13,897,530	13,897,530
Balance, beginning of period at May. 04, 2019	$ 119,808	$ 170,105	(50,297)
Balance, beginning of period (in shares) at May. 04, 2019		14,224,648
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases (in shares)		22,354
Employee stock purchases	77	$ 77
Stock Issued During Period, Shares, Restricted Stock Award, Gross		70,725
Net Share Settlement Of Stock Options And Restricted Stock, Shares		(10,792)
Net Share Settlement Of Stock Options And Restricted Stock Value	(44)	$ (44)
Stock-based compensation expense	731	$ 731
Repurchase and retirement of common stock (in shares)		(345,906)
Repurchase and retirement of common stock	(1,046)		(1,046)
Net loss	(17,120)		(17,120)
Balance, end of period at Aug. 03, 2019	102,406	$ 170,869	(68,463)
Balance, end of period (in shares) at Aug. 03, 2019		13,961,029
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases (in shares)		36,453
Employee stock purchases	45	$ 45
Stock Issued During Period, Shares, Restricted Stock Award, Gross		98,298
Net Share Settlement Of Stock Options And Restricted Stock, Shares		(23,937)
Net Share Settlement Of Stock Options And Restricted Stock Value	(33)	$ (33)
Stock-based compensation expense	$ 704	$ 704
Repurchase and retirement of common stock (in shares)	(174,313)	(174,313)
Repurchase and retirement of common stock	$ (243)		(243)
Net loss	(22,306)		(22,306)
Balance, end of period at Nov. 02, 2019	$ 80,573	$ 171,585	$ (91,012)
Balance, end of period (in shares) at Nov. 02, 2019	13,897,530	13,897,530