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Note 7 - Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Net operating losses | $ 628 | $ 1,477
Stock-based compensation | 510 | 925
Operating lease liabilities | 460 | 335
Other | 60 | 73
Total deferred tax assets | 1,658 | 2,810
Valuation allowance | (340) | (289)
Net deferred tax assets | 1,318 | 2,521
Deferred tax liabilities: |  |
Operating lease assets | 438 | 313
Foreign deferreds | (216) | (202)
Prepaids | 113 | 109
Other | 36 | 60
Total deferred tax liabilities | (803) | (684)
Net deferred tax assets | $ 515 | $ 1,837

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