CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Revision of Prior Period, Accounting Standards Update, Adjustment	Common Stock	Accumulated Deficit	Accumulated Deficit Revision of Prior Period, Accounting Standards Update, Adjustment
Balance, beginning of period at Feb. 02, 2019	$ 130,800		$ 169,477	$ (38,677)
Balance, beginning of period (Cumulative Effect of Change in Accounting Principle) at Feb. 02, 2019		$ (331)			$ (331)
Balance, beginning of period (in shares) at Feb. 02, 2019			14,504,824
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases	68		$ 68
Employee stock purchases (in shares)			6,880
Stock-based compensation expense	560		$ 560
Repurchase and retirement of common stock	(2,368)			(2,368)
Repurchase and retirement of common stock (in shares)			(287,056)
Net income (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 (Cumulative Effect of Change in Accounting Principle) at Feb. 02, 2019		$ (331)			$ (331)
Balance, beginning of period (in shares) at Feb. 02, 2019			14,504,824
Increase (Decrease) in Stockholders Equity [Roll Forward]
Exercise of stock options	$ 0
Repurchase and retirement of common stock (in shares)	(807,275)
Net income (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	77		$ 77
Employee stock purchases (in shares)			22,354
Restricted stock units vested			70,725
Net share settlement of restricted stock units	(44)		$ (44)
Net share settlement of restricted stock units, (in shares)			(10,792)
Stock-based compensation expense	731		$ 731
Repurchase and retirement of common stock	(1,046)			(1,046)
Repurchase and retirement of common stock (in shares)			(345,906)
Net income (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	45		$ 45
Employee stock purchases (in shares)			36,453
Restricted stock units vested			98,298
Net share settlement of restricted stock units	(33)		$ (33)
Net share settlement of restricted stock units, (in shares)			(23,937)
Stock-based compensation expense	704		$ 704
Repurchase and retirement of common stock	$ (243)			(243)
Repurchase and retirement of common stock (in shares)	(174,313)		(174,313)
Net income (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
Balance, beginning of period at Feb. 01, 2020	$ 76,955		$ 172,885	(95,930)
Balance, beginning of period (in shares) at Feb. 01, 2020	13,955,826		13,955,826
Increase (Decrease) in Stockholders Equity [Roll Forward]
Employee stock purchases	$ 35		$ 35
Employee stock purchases (in shares)			34,999
Restricted stock units vested			32,341
Net share settlement of restricted stock units	(8)		$ (8)
Net share settlement of restricted stock units, (in shares)			(8,663)
Stock-based compensation expense	307		$ 307
Net income (loss)	(7,438)			(7,438)
Balance, end of period at May. 02, 2020	69,851		$ 173,219	(103,368)
Balance, end of period (in shares) at May. 02, 2020			14,014,503
Balance, beginning of period at Feb. 01, 2020	$ 76,955		$ 172,885	(95,930)
Balance, beginning of period (in shares) at Feb. 01, 2020	13,955,826		13,955,826
Increase (Decrease) in Stockholders Equity [Roll Forward]
Exercise of stock options	$ 12
Repurchase and retirement of common stock (in shares)	0
Net income (loss)	$ (4,445)
Balance, end of period at Oct. 31, 2020	$ 73,417		$ 173,792	(100,375)
Balance, end of period (in shares) at Oct. 31, 2020	14,255,596		14,255,596
Balance, beginning of period at May. 02, 2020	$ 69,851		$ 173,219	(103,368)
Balance, beginning of period (in shares) at May. 02, 2020			14,014,503
Increase (Decrease) in Stockholders Equity [Roll Forward]
Restricted stock units vested			230,688
Net share settlement of restricted stock units	(5)		$ (5)
Net share settlement of restricted stock units, (in shares)			(5,110)
Stock-based compensation expense	329		$ 329
Net income (loss)	(9,363)			(9,363)
Balance, end of period at Aug. 01, 2020	60,812		$ 173,543	(112,731)
Balance, end of period (in shares) at Aug. 01, 2020			14,240,081
Increase (Decrease) in Stockholders Equity [Roll Forward]
Exercise of stock options	12		$ 12
Exercise of stock options (in shares)			1,464
Restricted stock units vested			18,575
Net share settlement of restricted stock units	(39)		$ (39)
Net share settlement of restricted stock units, (in shares)			(4,524)
Stock-based compensation expense	$ 276		$ 276
Repurchase and retirement of common stock (in shares)	0
Net income (loss)	$ 12,356			12,356
Balance, end of period at Oct. 31, 2020	$ 73,417		$ 173,792	$ (100,375)
Balance, end of period (in shares) at Oct. 31, 2020	14,255,596		14,255,596