Inventories (Tables)

9 Months Ended

Sep. 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:

	September 30,		December 31,
	2016		2015
Parts and raw materials	$	40,076	$	40,578
Work in process	5,964		5,643
Finished goods	9,985		6,352
Inventories	$	56,025	$	52,573