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Commitments And Contingencies (Narrative) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Other Commitments [Line Items] |  |
Unreported loss liability | $ 1,900,000 | $ 1,900,000
Recoverable insurance amounts | 1,000,000.0 | 974,000
Property and equipment, net | 31,497,000 | $ 33,077,000
PerClot [Member] |  |
Other Commitments [Line Items] |  |
Prepaid royalties | 1,500,000 |
Net intangible assets | 1,700,000 |
Property and equipment, net | 1,200,000 |
Maximum [Member] |  |
Other Commitments [Line Items] |  |
Estimated loss | $ 4,100,000 |
Starch Technology Purchase [Member] |  |
Other Commitments [Line Items] |  |
Term of distribution agreement | 15 years |
Expected future contingent payment amounts | $ 1,000,000.0 |
Number of notice days | 180 days |

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