Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue Recognition [Abstract]

Disaggregation Of Revenue

	Three Months Ended				Six Months Ended
	June 30,				June 30,
		2018		2017		2018		2017
	(Unaudited)				(Unaudited)
Domestic hospitals	$	35,139	$	32,659	$	68,682	$	64,608
International hospitals		21,902		4,032		40,951		9,232
CardioGenesis cardiac laser therapy		1,578		2,052		2,924		3,638
International distributors		9,877		9,075		17,887		15,399
Total sources of revenue	$	68,496	$	47,818	$	130,444	$	92,877