Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Components of inventories

Components of inventories consist of the following:

	September 30, 2012		December 31, 2011
Raw materials	$	9,690	$	11,039
Work in process	2,150		1,805
Finished goods	6,002		5,771
	$	17,842	$	18,615