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, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Total revenues	$ 89,251	$ 80,340	$ 172,480	$ 157,553
Total cost of products and preservation services	31,167	28,168	60,669	54,662
Total gross margin	58,084	52,172	111,811	102,891
Medical devices
Segment Reporting Information [Line Items]
Total revenues	66,003	58,936	128,294	116,478
Total cost of products and preservation services	20,977	18,230	40,510	35,638
Total gross margin	45,026	40,706	87,784	80,840
Preservation services
Segment Reporting Information [Line Items]
Total revenues	23,248	21,404	44,186	41,075
Total cost of products and preservation services	10,190	9,938	20,159	19,024
Total gross margin	$ 13,058	$ 11,466	$ 24,027	$ 22,051