Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Components Of Inventories

	As of
	June 30, 2012			December 31, 2011
Raw material	$	42,406		$	45,795
Work in process		373			872
Deferred costs of long-term contracts		304			220
Finished goods		89,428			101,111
Inventories, gross		132,511			147,998
Inventory reserves		(15,822	)		(14,710	)
Inventories, net	$	116,689		$	133,288