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Note 1 - Organization and Significant Accounting Policies - Concentrations Risk by Geographic Locations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Long-Lived Assets | $ 48,266 | $ 46,611 |
UNITED STATES |  |  |
Long-Lived Assets | 42,829 | 40,708 |
NETHERLANDS |  |  |
Long-Lived Assets | $ 5,437 | $ 5,903 |
Revenue Benchmark [Member] | Product Concentration Risk [Member] | CryoStor Products [Member] |  |  |
Revenue | 36.00% | 33.00% | 60.00%
Revenue Benchmark [Member] | Product Concentration Risk [Member] | 780XLE Freezer Line [Member] |  |  |
Revenue | 22.00% | 22.00% | 0.00%
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | UNITED STATES |  |  |
Revenue | 72.00% | 78.00% | 73.00%
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | CANADA |  |  |
Revenue | 17.00% | 7.00% | 13.00%
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | EMEA [Member] |  |  |
Revenue | 7.00% | 14.00% | 12.00%
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | Geographic, Other [Member] |  |  |
Revenue | 4.00% | 1.00% | 2.00%
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | All Location [Member] |  |  |
Revenue | 100.00% | 100.00% | 100.00%

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