Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Components of inventories

Our inventories are valued at the lower of cost or market and computed on a first-in, first-out (FIFO) basis. Components of Inventories are as follows:

	June 30,		December 31,
	2016		2015
Parts and raw materials	$	41,459	$	40,578
Work in process	7,073		5,643
Finished goods	8,695		6,352
Inventories	$	57,227	$	52,573