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Sales Of Business Components (Details) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 18, 2016 | Feb. 03, 2016 | May 16, 2012 | Jan. 31, 2015 | Dec. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Fair value of contingent consideration |  |  | $ 1,800,000 |  |  |  |  |  | $ 0
Gain (loss) on revaluation of contingent consideration |  |  |  |  |  |  | $ 0 | $ 0 | 1,900,000
Contingent consideration liability |  |  |  |  |  |  | 0 | 0 |
Proceeds from divestiture of business |  |  |  |  |  |  | 19,795,000 |  |
Payments to acquire distribution rights |  |  |  |  |  |  | $ 1,226,000 |  |
Inventory received | $ 1,700,000 |  |  |  |  |  |  |  |
Hemosphere [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Total purchase price |  |  | 22,000,000 |  |  |  |  |  |
Cash acquired from acquisition |  |  | 3,200,000 |  |  |  |  |  |
Maximum amount of future consideration payment |  |  | $ 4,500,000 |  |  |  |  |  |
Hancock Jaffe [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Distribution agreement amount of payment | 3,400,000 |  |  | $ 576,000 |  | $ 1,200,000 |  | $ 1,200,000 | $ 1,700,000
HeRO Graft Product Line [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Amount of consideration received from sale of product line |  | $ 18,500,000 |  |  |  |  |  |  |
Proceeds from divestiture of business |  | 17,800,000 |  |  |  |  |  |  |
Pre-tax gain (loss) on sale business components |  | $ 8,800,000 |  |  |  |  |  |  |
HeRO Graft Product Line [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business |  |  |  |  | $ 740,000 |  |  |  |
ProCol [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business | 2,000,000 |  |  |  |  |  |  |  |
Pre-tax gain (loss) on sale business components | (845,000) |  |  |  |  |  |  |  |
Remaining prepayments settled | $ 1,700,000 |  |  |  |  |  |  |  |
HeRO Graft And ProCol Product Lines [Member] | Maximum [Member] | Product Lines Concentration Risk [Member] | Total Revenues [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Concentration percentage |  |  |  |  |  |  |  | 10.00% |
HeRO Graft And ProCol Product Lines [Member] | Maximum [Member] | Product Lines Concentration Risk [Member] | Long-Lived Assets [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Concentration percentage |  |  |  |  |  |  |  | 10.00% |

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