Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2020

Revenue Recognition [Abstract]

Disaggregation Of Revenue

	Three Months Ended
	March 31,
		2020		2019
	(Unaudited)
Domestic hospitals	$	36,336	$	35,611
International hospitals		19,737		20,570
International distributors		10,245		9,610
CardioGenesis cardiac laser therapy		111		1,714
Total sources of revenue	$	66,429	$	67,505