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Segment and Geographic Information
 12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Segment and Geographic Information 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 aortic stent grafts, On-X, surgical sealants, and other product revenues. Aortic stent grafts include aortic arch stent grafts, abdominal stent grafts, and synthetic vascular grafts. Aortic arch stent grafts include our E-vita® Open NEO, E-vita Open Plus, AMDSTM, NEXUS ONETM, NEXUS DUOTM, NEXUS TRETM, E-vita Thoracic 3G, and ArtivexTM. Abdominal stent grafts include our E-xtra Design Engineering, E-nsideTM, E-tegraTM, E-ventusTM BX, Tuva BX, and E-liacTM products. Surgical sealants include BioGlue® Surgical Adhesive products. The Preservation Services segment includes external services revenues from the preservation of cardiac and vascular tissues. There are no intersegment revenues.
Our Chief Operating Decision Maker (“CODM”) is the Company’s Chairman, President, and CEO. The CODM reviews financial information to assess segment performance and determine how to allocate resources across segments.
The primary measure of segment performance, as assessed by our CODM, is segment gross margin or net external revenues less cost of products and preservation services. The CODM regularly reviews these costs, recognizing them as significant segment expenses. 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 reportable segments (in thousands):
Year Ended December 31,
 202420232022
Revenues:
Medical devices$290,230 $261,185 $230,353 
Preservation services98,307 92,819 83,436 
Total revenues388,537 354,004 313,789 
Cost of products and preservation services:
Medical devices99,385 84,595 72,166 
Preservation services40,371 40,233 39,100 
Total cost of products and preservation services139,756 124,828 111,266 
Gross margin:
Medical devices190,845 176,590 158,187 
Preservation services57,936 52,586 44,336 
Total gross margin$248,781 $229,176 $202,523 
Net revenues by product were as follows (in thousands):
Year Ended December 31,
202420232022
Products:
Aortic stent grafts$123,081 $107,469 $92,752 
On-X83,982 74,528 63,904 
Surgical sealants73,898 68,016 65,379 
Other9,269 11,172 8,318 
Total products290,230 261,185 230,353 
Preservation services:98,307 92,819 83,436 
Total revenues$388,537 $354,004 $313,789 
Net revenues by geographic location attributed to countries based on the location of the customer were as follows (in thousands):
Year Ended December 31,
202420232022
US$189,994 $179,485 $161,113 
International198,543 174,519 152,676 
Total revenues$388,537 $354,004 $313,789 
Revenues attributed to customers in Germany accounted for 9%, 8% and 9% of total revenues for the years ended December 31, 2024, 2023 and 2022, respectively.
As of December 31, 2024 and 2023, $18.4 million and $17.5 million of our long-lived assets were held in the US, respectively, where the corporate headquarters and a portion of our manufacturing facilities are located. Our long-lived international assets were $18.0 million and $20.9 million as of December 31, 2024 and 2023, respectively, of which 96% were located in Hechingen, Germany. As of December 31, 2024 and 2023, $241.0 million and $247.3 million, respectively, of our goodwill was allocated entirely to our Medical Devices segment.