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RECEIVABLES (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Billed receivables:    
Trade and other receivables $ 389,866 $ 369,109
Less: Allowance for doubtful accounts (6,334) (6,880)
Net billed receivables 383,532 362,229
Unbilled receivables:    
Recoverable costs and estimated earnings not billed 232,272 227,957
Less: Progress payments applied (33,813) (34,160)
Net unbilled receivables 198,459 193,797
Receivables, net $ 581,991 $ 556,026