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Note 12 - Segment Information - Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets | $ 84,029 | $ 79,535
US Segment [Member] |  |
Assets | 31,675 | 24,927
International Segment [Member] |  |
Assets | $ 52,354 | $ 54,608

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