INVENTORIES (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Inventories [Abstract]
Raw material	$ 161,157	$ 147,950
Work-in-process	103,595	69,302
Finished goods and component parts	78,998	73,419
Inventory costs related to U.S. Government and other long-term contracts	39,622	41,029
Gross inventories	383,372	331,700
Less: Inventory reserves	(44,134)	(41,596)
Progress payments applied, principally related to long-term contracts	(10,284)	(9,001)
Inventories, net	$ 328,954	$ 281,103