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Segment And Geographic Information | 12 Months Ended
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Dec. 31, 2020
Segment And Geographic Information [Abstract] |
Segment and Geographic Information | 17. Segment and Geographic Information We have two reportable segments organized according to our products and services: Medical Devices and Preservation Services. The Medical Devices segment includes external revenues from product sales of BioGlue, a ortic stents and stent grafts, On-X products, CardioGenesis cardiac laser therapy, PerClot and PhotoFix. The Preservation Services segment includes external services revenues from the preservation of cardiac and vascular tissues. There are no intersegment revenues. The primary measure of segment performance, as viewed by our management, is segment gross margin, or net external revenues less cost of products and preservation services. We do not segregate assets by segment; therefore, asset information is excluded from the segment disclosures below. The following table summarizes revenues, cost of products and preservation services, and gross margins for our operating segments (in thousands):
| 2020 |  | 2019 |  | 2018
Revenues: |  |  |  |  |  |  |  |
Medical devices | $ | 179,299 |  | $ | 197,246 |  | $ | 187,394
Preservation services |  | 73,928 |  |  | 78,976 |  |  | 75,447
Total revenues |  | 253,227 |  |  | 276,222 |  |  | 262,841
Cost of products and preservation services: |  |  |  |  |  |  |  |
Medical devices |  | 50,128 |  |  | 55,022 |  |  | 53,772
Preservation services |  | 35,315 |  |  | 38,187 |  |  | 36,085
Total cost of products and preservation services |  | 85,443 |  |  | 93,209 |  |  | 89,857
Gross margin: |  |  |  |  |  |  |  |
Medical devices |  | 129,171 |  |  | 142,224 |  |  | 133,622
Preservation services |  | 38,613 |  |  | 40,789 |  |  | 39,362
Total gross margin | $ | 167,784 |  | $ | 183,013 |  | $ | 172,984
Net revenues by product for the years ended December 31, 2020, 2019, and 2018 were as follows (in thousands):
| 2020 |  | 2019 |  | 2018
Products: |  |  |  |  |  |  |  |
BioGlue | $ | 62,068 |  | $ | 68,611 |  | $ | 66,660
Aortic stents and stent grafts |  | 61,663 |  |  | 64,974 |  |  | 63,341
On-X |  | 48,053 |  |  | 50,096 |  |  | 44,832
PhotoFix |  | 4,169 |  |  | 3,754 |  |  | 2,577
PerClot |  | 2,882 |  |  | 3,795 |  |  | 3,767
CardioGenesis cardiac laser therapy |  | 464 |  |  | 6,016 |  |  | 6,217
Total products |  | 179,299 |  |  | 197,246 |  |  | 187,394
Preservation services: |  |  |  |  |  |  |  |
Cardiac tissue |  | 37,893 |  |  | 40,879 |  |  | 35,683
Vascular tissue |  | 35,852 |  |  | 38,097 |  |  | 39,764
NeoPatch |  | 183 |  |  | -- |  |  | --
Total preservation services |  | 73,928 |  |  | 78,976 |  |  | 75,447
Total revenues | $ | 253,227 |  | $ | 276,222 |  | $ | 262,841
Net revenues by geographic location attributed to countries based on the location of the customer for the years ended December 31, 2020, 2019, and 2018 were as follows (in thousands):
| 2020 |  | 2019 |  | 2018
U.S. | $ | 138,274 |  | $ | 150,553 |  | $ | 144,651
International |  | 114,953 |  |  | 125,669 |  |  | 118,190
Total revenues | $ | 253,227 |  | $ | 276,222 |  | $ | 262,841
For the years ended December 31, 2020, 2019 and 2018, revenues attributed to customers in Germany accounted for 10% of total revenues. At December 31, 2020 and 2019 54% and 57% of our long-lived assets were held in the U.S., where the corporate headquarters and a portion of our manufacturing facilities are located. Our long-lived international assets were $15.1 million and $14.1 million as of December 31, 2020, and 2019, respectively of which 97% were located in Hechingen, Germany. At December 31, 2020 and 2019 $260.1 million and $186.7 million, respectively, of our goodwill was allocated entirely to our Medical Devices segment.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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