2. Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Inventories

	September 30,		December 31,
	2017		2016
Raw materials	$	13,334	$	12,984
Work in process		7,174		6,230
Finished goods		9,416		9,801
Total inventories	$	29,924	$	29,015