INVENTORIES (Tables)

6 Months Ended

Jun. 30, 2017

INVENTORIES

Schedule of inventories

Inventories consist of the following (in thousands):

	Balance as of
	June 30,		December 31,
	2017		2016
Raw materials	$	11,524	$	9,412
Work-in-process		1,509		2,984
Finished goods		2,595		3,110
Deferred costs		—		680
Inventories	$	15,628	$	16,186