Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Components Of Inventories

(in thousands)	2013		2012
Raw materials	$	19,322	$	20,262
Work in process		795		477
Finished goods and parts		23,901		21,081
Inventories, net	$	44,018	$	41,820