Segment Information (Revenues, Cost Of Products And Services, And Gross Margins For Operating Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 76,838	$ 72,207	$ 234,391	$ 219,442
Total cost of products and preservation services	28,094	24,418	82,756	73,302
Total gross margin	48,744	47,789	151,635	146,140
Medical devices
Segment Reporting Information [Line Items]
Total revenues	55,248	53,107	171,726	162,528
Total cost of products and preservation services	17,743	15,503	53,381	46,592
Total gross margin	37,505	37,604	118,345	115,936
Preservation services
Segment Reporting Information [Line Items]
Total revenues	21,590	19,100	62,665	56,914
Total cost of products and preservation services	10,351	8,915	29,375	26,710
Total gross margin	$ 11,239	$ 10,185	$ 33,290	$ 30,204