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Segment Information (Revenues, Cost Of Products And Services, And Gross Margins For Operating Segments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | $ 71,139 | $ 68,496 | $ 138,644 | $ 130,444 |
Total cost of products and preservation services | 24,173 | 22,645 | 47,405 | 45,365 |
Total gross margin | 46,966 | 45,851 | 91,239 | 85,079 |
Goodwill | 188,106 |  | 188,106 |  | $ 188,781
Operating Segments [Member] | Medical Devices [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 51,168 | 49,313 | 99,569 | 92,911 |
Total cost of products and preservation services | 14,489 | 13,550 | 28,315 | 27,707 |
Total gross margin | 36,679 | 35,763 | 71,254 | 65,204 |
Operating Segments [Member] | Preservation Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 19,971 | 19,183 | 39,075 | 37,533 |
Total cost of products and preservation services | 9,684 | 9,095 | 19,090 | 17,658 |
Total gross margin | $ 10,287 | $ 10,088 | $ 19,985 | $ 19,875 |

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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