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Note 3 - Business Acquisition - Summary of Balances of Intangible Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Gross carrying amount | $ 3,668 | $ 0
Accumulated amortization | (51) | 0
Net carrying amount | 3,617 | 0
Technology-Based Intangible Assets [Member] |  |
Gross carrying amount | 2,757 | 0
Accumulated amortization | (23) | 0
Net carrying amount | 2,734 | 0
Customer Relationships [Member] |  |
Gross carrying amount | 648 | 0
Accumulated amortization | (6) | 0
Net carrying amount | 642 | 0
Order or Production Backlog [Member] |  |
Gross carrying amount | 263 | 0
Accumulated amortization | (22) | 0
Net carrying amount | $ 241 | $ 0

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