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Significant Accounting Policies, Inventory Valuation (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Inventory Valuation [Abstract] |  |
Raw materials | $ 18,197 | $ 16,708
Work in process | 2,096 | 2,252
Finished goods | 1,906 | 3,005
Total inventory | 22,199 | 21,965
Clinical [Member] |  |
Inventory Valuation [Abstract] |  |
Raw materials | 10,695 | 9,206
Commercial [Member] |  |
Inventory Valuation [Abstract] |  |
Raw materials | $ 7,502 | $ 7,502

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