Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Schedule Of Inventories

	December 31,
	2011		2010
Raw materials	$	30,485	$	32,586
Service parts		13,412		9,818
Work in process		316		92
Finished goods		59,409		40,161
Inventories	$	103,622	$	82,657