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Note 2 - Fair Value Measurement (Details Textual) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Oct. 01, 2020 USD ($) | Nov. 10, 2019
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | $ (3,335,000) | $ (491,000) |  |  |
CBS Acquisition [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total |  |  | $ 140,000 |  |
CBS Acquisition [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  |  | 0.210 |  | 0.260
CBS Acquisition [Member] | Measurement Input, Risk Free Interest Rate [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  |  | 0.0023 |  | 0.0174
CBS Acquisition [Member] | Measurement Input, Price Volatility [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  |  | 0.63 |  | 0.70
SciSafe Holdings, Inc [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total | 6,600,000 |  | $ 9,900,000 | $ 3,700,000 |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | $ 3,300,000 | $ 491,000 |  |  |
SciSafe Holdings, Inc [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 9.9 |  |  | 0.045 |
SciSafe Holdings, Inc [Member] | Measurement Input, Risk Free Interest Rate [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 2.3 |  |  | 0.0020 |
SciSafe Holdings, Inc [Member] | Measurement Input, Asset Price Volatility [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 71 |  |  | 0.60 |
SciSafe Holdings, Inc [Member] | Measurement Input, Revenue Volatility [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 31 |  |  | 0.15 |

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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e7008-128479 + Details
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