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Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Other Commitments [Line Items] |  |
Deferred rent obligations | $ 3,020 | $ 2,355
Unreported loss liability | 1,500 | 1,500
Recoverable insurance amounts | 686 | 626
Property and equipment, net | 20,694 | $ 18,502
PerClot [Member] |  |
Other Commitments [Line Items] |  |
Prepaid royalties | 1,500 |
Net intangible assets | 2,800 |
Property and equipment, net | 1,300 |
Maximum [Member] |  |
Other Commitments [Line Items] |  |
Estimated loss | $ 2,900 |
Starch Technology Purchase [Member] |  |
Other Commitments [Line Items] |  |
Term of distribution agreement | 15 years |
Expected future contingent payment amounts to be initially recorded as research and development expense | $ 1,000 |
Number of notice days | 180 days |

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