Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

Revenue Recognition [Abstract]

Disaggregation Of Revenue

	Three Months Ended
	March 31,
		2021		2020
	(Unaudited)
Domestic hospitals	$	36,229	$	36,336
International hospitals		26,128		19,737
International distributors		8,642		10,245
CardioGenesis cardiac laser therapy		88		111
Total sources of revenue	$	71,087	$	66,429