D. INVENTORIES

12 Months Ended

Dec. 31, 2015

Inventory Disclosure [Abstract]

INVENTORIES

At December 31, 2015 and 2014, inventories consisted of the following:

	2015		2014
	(in thousands)
Raw materials	$	22,240	$	16,243
Work in process and sub-assemblies		30,766		13,379
Finished goods		13,232		4,158
	$	66,238	$	33,780

For the years ended December 31, 2015, 2014 and 2013, the lower of cost or market adjustment expensed for inventory was $2.8 million, $0.9 million and $0.5 million, respectively.