Revenue Recognition (Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total sources of revenue	$ 87,854	$ 76,838	$ 260,334	$ 234,391
Asset write off			390
Domestic hospitals
Disaggregation of Revenue [Line Items]
Total sources of revenue	43,794	40,710	126,764	116,512
International hospitals
Disaggregation of Revenue [Line Items]
Total sources of revenue	24,481	23,655	80,543	78,368
International distributors
Disaggregation of Revenue [Line Items]
Total sources of revenue	16,616	11,469	46,166	34,685
Other
Disaggregation of Revenue [Line Items]
Total sources of revenue	$ 2,963	$ 1,004	$ 6,861	$ 4,826