Revenue By Market

12 Months Ended

Dec. 31, 2017

Revenue By Market [Abstract]

Revenue By Market

21.  REVENUE BY MARKET

The following table sets forth, for the periods indicated, net revenue by market:

	Year Ended December 31
	2017		2016			2015
Medical	$	52,336	$	37,602	$	39,609
Hearing Health		23,316		21,882		21,089
Hearing Health Direct-to-Consumer		6,492		1,025		-
Professional Audio Communications		6,166		7,500		7,829
Total Net Sales	$	88,310	$	68,009	$	68,527