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Inventories, Net Of Customer Advances (Schedule Of Inventories) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Inventories, Net Of Customer Advances [Abstract]    
Cost incurred on long-term contracts in progress $ 866,325 $ 763,791
Raw materials 110,528 82,236
Advances to suppliers and subcontractors 47,168 50,839
Inventory, gross 1,024,021 896,866
Cost incurred on contracts in progress deducted from customer advances 38,048 55,957
Advances received from customers (*) 150,195 [1] 101,231 [1]
Provision for losses on long-term contracts 74,509 74,408
Inventory, net $ 761,269 $ 665,270
[1] The Company has transferred legal title of inventories to certain customers as collateral for advances received. Advances are allocated to the relevant inventories on a per-project basis. In cases where advances are in excess of the inventories, the net amount is presented in customer advances (See Note 14).