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Financial Instruments (Reconciliation Of Changes In Fair Value Of Level 3 Liabilities) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Financial Instruments [Abstract] |
Beginning balance, Endospan Loan | $ 358
Additional investment in Endospan | 5,000
Change in valuation | (4,949)
Ending balance, Endospan Loan | 409
Beginning balance, Contingent Consideration |
Fair value at acquisition | (55,407)
Change in valuation | (4,523)
Ending balance, Contingent Consideration | $ (59,930)

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