Inventories (Tables)

9 Months Ended

Sep. 30, 2012

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 (in thousands):

	September 30,		December 31,
	2012		2011
Parts and raw materials	$	61,577	$	57,962
Work in process	6,519		3,708
Finished goods	19,515		18,613
Inventories, net of reserves	$	87,611	$	80,283