Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Components Of Inventories

	As of
	December 31, 2011		December 31, 2010
Raw material	$	44,213	$	33,441
Work in process		872		171
Deferred costs of long-term contracts		220		482
Finished goods		102,693		88,713
Total inventories, gross		147,998		122,807
Inventory reserves		(14,710)		(9,837)
Total inventories, net	$	133,288	$	112,970