Segment Information (Revenues, Cost Of Products And Services, And Gross Margins For Operating Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 77,213	$ 71,087
Total cost of products and preservation services	26,494	23,249
Total gross margin	50,719	47,838
Operating Segments [Member] | Medical Devices [Member]
Segment Reporting Information [Line Items]
Total revenues	57,542	53,345
Total cost of products and preservation services	17,408	14,911
Total gross margin	40,134	38,434
Operating Segments [Member] | Preservation Services [Member]
Segment Reporting Information [Line Items]
Total revenues	19,671	17,742
Total cost of products and preservation services	9,086	8,338
Total gross margin	$ 10,585	$ 9,404