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Note 7 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands | Jan. 31, 2022 | Jan. 31, 2021
--- | --- | ---
U.S. Federal NOL carryforward | $ 8,424 | $ 8,626
Deferred compensation | 350 | 508
Research tax credit | 2,573 | 2,686
Foreign NOL carryforward | 448 | 543
Foreign tax credit | 2,580 | 2,580
Stock compensation | 62 | 442
Other accruals not yet deducted | 276 | 245
State NOL carryforward | 2,730 | 2,678
Accrued commissions and incentives | 483 | 362
Inventory valuation allowance | 116 | 106
Lease liability | 418 | 541
Accrued pension | 0 | 18
Other | 17 | 95
Deferred tax assets, gross | 18,477 | 19,430
Valuation allowance | (16,905) | (17,746)
Total deferred tax assets, net of valuation allowances | 1,572 | 1,684
Depreciation | (643) | (981)
Foreign subsidiaries unremitted earnings | (231) | (289)
Prepaid | (54) | (21)
Accrued pension | (159) | 0
Right of use asset | (386) | (484)
Total deferred tax liabilities | (1,473) | (1,775)
Deferred tax asset/(liability), net | 99 | 91
Deferred tax asset/(liability), net | (99) | (91)
Long-term assets | 811 | 823
Long-term liability | $ (712) | $ (914)

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