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Significant Accounting Policies, Inventory Valuation (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Inventory Valuation [Abstract] |  |
Raw materials | $ 19,638 | $ 15,883
Work-in-process | 2,645 | 2,039
Finished goods | 602 | 258
Total inventory | 22,885 | 18,180
Clinical Member] |  |
Inventory Valuation [Abstract] |  |
Raw materials | 9,162 | 9,363
Commercial [Member] |  |
Inventory Valuation [Abstract] |  |
Raw materials | $ 10,476 | $ 6,520

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