Inventories (Tables)

6 Months Ended

Jun. 30, 2011

Inventories

Disclosure of inventories

Inventories consist of the following:

	June 30,		December 31,
	2011		2010
Parts and work-in-process	$	25,646	$	23,224
Finished goods	43,583		45,520
	$	69,229	$	68,744