Segment and Geographic Information (Revenues, Cost Of Products And Services, And Gross Margins For Operating Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 313,789	$ 298,836	$ 253,227
Total cost of products and preservation services	111,266	101,322	85,443
Total gross margin	202,523	197,514	167,784
Medical devices
Segment Reporting Information [Line Items]
Total revenues	230,353	221,597	179,299
Total cost of products and preservation services	72,166	65,196	50,128
Total gross margin	158,187	156,401	129,171
Preservation services
Segment Reporting Information [Line Items]
Total revenues	83,436	77,239	73,928
Total cost of products and preservation services	39,100	36,126	35,315
Total gross margin	$ 44,336	$ 41,113	$ 38,613