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Note 9 - Stockholders' Equity - Changes in Accumulated Other Comprehensive Loss (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($)
Balance, December 31, 2019 | $ 75,064
Balance, December 31, 2020 | 67,697
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] |
Balance, December 31, 2019 | (1,245)
Other comprehensive income | 920
Balance, December 31, 2020 | (325)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |
Balance, December 31, 2019 | (19)
Other comprehensive income | 8
Balance, December 31, 2020 | (11)
AOCI Attributable to Parent [Member] |
Balance, December 31, 2019 | (1,264)
Other comprehensive income | 928
Balance, December 31, 2020 | $ (336)

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