Note 7 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
U.S. Federal NOL carryforward	$ 6,173	$ 7,197
Deferred compensation	241	276
Research tax credit	1,505	2,258
Foreign NOL carryforward	258	318
Foreign tax credit	2,580	2,580
Stock compensation	21	43
Other accruals not yet deducted	500	305
State NOL carryforward	1,495	2,744
Accrued commissions and incentives	845	851
Inventory reserve	70	107
Lease liability	878	278
Other	0	165
Deferred tax assets, gross	14,566	17,122
Valuation allowance	(5,689)	(15,993)
Total deferred tax assets, net of valuation allowances	8,877	1,129
Depreciation	(370)	(415)
Foreign subsidiaries unremitted earnings	(783)	(591)
Prepaid	(94)	(70)
Right of use asset	(855)	(266)
Other	(73)	0
Total deferred tax liabilities	(2,175)	(1,342)
Deferred tax assets (liabilities), net	6,702
Deferred tax assets (liabilities), net		(213)
Long-term assets	7,919	696
Long-term liability	$ (1,217)	$ (909)