Inventories, Net And Deferred Preservation Costs (Tables)	12 Months Ended
	Dec. 31, 2021
Inventories, Net And Deferred Preservation Costs [Abstract]
Schedule Of Inventories	2021 2020Raw materials and supplies$ 35,780 $ 33,625Work-in-process 9,712 6,318Finished goods 31,479 33,095Total inventories, net$ 76,971 $ 73,038
Schedule Of Deferred Preservation Costs	2021 2020Cardiac tissues$ 20,591 $ 17,374Vascular tissues 22,272 19,172Total deferred preservation costs, net$ 42,863 $ 36,546