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Note 7 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands | Jan. 31, 2021 | Jan. 31, 2020
--- | --- | ---
U.S. Federal NOL carryforward | $ 8,626 | $ 7,209
Deferred compensation | 508 | 401
Research tax credit | 2,686 | 2,686
Foreign NOL carryforward | 543 | 223
Foreign tax credit | 2,580 | 2,580
Stock compensation | 442 | 429
Other accruals not yet deducted | 245 | 267
State NOL carryforward | 2,678 | 2,567
Accrued commissions and incentives | 362 | 354
Inventory valuation allowance | 106 | 75
Lease liability | 541 | 604
Other | 113 | 127
Deferred tax assets, gross | 19,430 | 17,522
Valuation allowance | (17,746) | (15,937)
Total deferred tax assets, net of valuation allowances | 1,684 | 1,585
Depreciation | (981) | (1,275)
Foreign subsidiaries unremitted earnings | (289) | (470)
Prepaid | (21) | (61)
Right of use asset | (484) | (538)
Total deferred tax liabilities | (1,775) | (2,344)
Deferred tax liability, net | (91) | (759)
Long-term assets | 823 | 293
Long-term liability | $ (914) | $ (1,052)

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