Consolidated Balance Sheets (Parenthetical) - USD ($)	Jan. 29, 2022	Jan. 30, 2021
Statement Of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 0	$ 6,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	2,000	2,000
Preferred stock, shares outstanding	2,000	2,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	12,886,000	11,465,000
Common stock, shares outstanding	12,886,000	11,465,000