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, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 80,340	$ 76,148	$ 157,553	$ 147,235
Total cost of products and preservation services	28,168	25,635	54,662	48,884
Total gross margin	52,172	50,513	102,891	98,351
Operating Segments | Medical devices
Segment Reporting Information [Line Items]
Total revenues	58,936	56,076	116,478	109,421
Total cost of products and preservation services	18,230	16,178	35,638	31,089
Total gross margin	40,706	39,898	80,840	78,332
Operating Segments | Preservation services
Segment Reporting Information [Line Items]
Total revenues	21,404	20,072	41,075	37,814
Total cost of products and preservation services	9,938	9,457	19,024	17,795
Total gross margin	$ 11,466	$ 10,615	$ 22,051	$ 20,019