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Note 8 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands | Jan. 31, 2020 | Jan. 31, 2019
--- | --- | ---
U.S. Federal NOL carryforward | $ 7,209 | $ 7,480
Deferred compensation | 401 | 382
Research tax credit | 2,686 | 2,703
Foreign NOL carryforward | 223 | 390
Foreign tax credit | 2,580 | 2,305
Stock compensation | 429 | 459
Other accruals not yet deducted | 328 | 349
State NOL carryforward | 2,567 | 2,552
Accrued commissions and incentives | 354 | 643
Inventory valuation allowance | 75 | 112
Other | 132 | 159
Deferred tax assets, gross | 16,984 | 17,534
Valuation allowance | (15,937) | (16,199)
Total deferred tax assets, net of valuation allowances | 1,047 | 1,335
Depreciation | (1,275) | (1,734)
Foreign subsidiaries unremitted earnings | (470) | (498)
Prepaid | (61) | (80)
Total deferred tax liabilities | (1,806) | (2,312)
Deferred tax liability, net | (759) | (977)
Long-term assets | 293 | 458
Long-term liability | $ (1,052) | $ (1,435)

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