Note 16 - Income Taxes - Deferred Taxes (Details) - USD ($)	Jan. 31, 2022	Jan. 31, 2021
Net operating losses	$ 20,282,000	$ 17,177,000
Tax credit carry forwards	165,000	139,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	833,000	718,000
Allowance for doubtful accounts	102,000	0
Inventory	835,000	565,000
Accruals not yet deductible for tax purposes	130,000	281,000
Fixed assets	289,000	232,000
Intangible assets	391,000	445,000
Other	623,000	599,000
Gross deferred tax assets	23,650,000	20,156,000
Valuation allowance	(23,650,000)	(20,156,000)
Deferred tax assets	0	0
Other	92,000	198,000
Deferred tax liabilities	(92,000)	(198,000)
Unrecognized tax benefits	0	0
Total deferred tax liabilities, net	$ (92,000)	$ (198,000)