Inventories (Tables)

6 Months Ended

Jun. 30, 2018

INVENTORIES

Schedule of inventories

Inventories consist of the following (in thousands):

	Balance as of
	June 30,		December 31,
	2018		2017
Raw materials	$	16,801	$	13,663
Work-in-process		761		2,264
Finished goods		4,697		1,785
Inventories	$	22,259	$	17,712