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Acquisition Of On-X Life Technologies (Narrative) (Details) - On-X Agreement [Member] - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 20, 2016 | Mar. 31, 2016 | Dec. 22, 2015
Business Acquisition [Line Items] |  |  |
Acquisition agreement date |  | Dec. 22, 2015 |
Total consideration | $ 128,217 |  |
Cash consideration | $ 93,600 |  |
Common shares issued | 3,703,699 |  |
Common stock consideration | $ 34,600 |  |
Acquisition effective date |  | Jan. 20, 2016 |
Transaction and integration costs |  | $ 5,500 |
Scenario, Plan [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Total consideration |  |  | $ 130,000

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