Revenue By Market (Tables)

12 Months Ended

Dec. 31, 2018

Revenue By Market [Abstract]

Schedule Of Net Revenue By Market

	Year Ended December 31
	2018		2017			2016
Medical Biotelemetry	$	75,645	$	53,452	$	36,618
Hearing Health		26,720		24,527		23,837
Hearing Health Direct-to-End-Consumer		6,858		6,492		1,025
Professional Audio Communications		7,239		6,166		7,500
Total Net Revenue	$	116,462	$	90,637	$	68,980