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Note 11 - Acquisitions - Consideration (Details) - USD ($) $ in Thousands |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 01, 2020 | Nov. 12, 2019 | Aug. 08, 2019 | Apr. 01, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Astero [Member] |  |  |  |  |  |
Cash consideration |  |  |  | $ 12,521 |  |
Contingent consideration |  |  |  | 1,491 |  |
Working capital adjustment |  |  |  | (71) |  |
Total consideration transferred |  |  |  | $ 13,941 |  |
SAVSU [Member] |  |  |  |  |  |
Stock consideration |  |  | $ 19,932 |  | $ 0 | $ 19,932
CBS Acquisition [Member] |  |  |  |  |  |
Cash consideration |  | $ 11,000 |  |  |  |
Contingent consideration |  | 856 |  |  |  |
Total consideration transferred |  | 15,856 |  |  |  |
Stock consideration |  | $ 4,000 |  |  | 0 | 4,000
SciSafe Holdings, Inc [Member] |  |  |  |  |  |
Cash consideration | $ 15,000 |  |  |  |  |
Contingent consideration | 3,663 |  |  |  |  |
Working capital adjustment | (53) |  |  |  |  |
Total consideration transferred | 36,526 |  |  |  |  |
Stock consideration | $ 17,916 |  |  |  | $ 17,916 | $ 0

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