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

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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