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Contracts-In-Process And Long-Term Receivables (Contracts-In-Process And Long-Term Receivables) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Contracts-in-Process:  
Contracts-in-process, as reported $ 159,261
U.S. Government Contracts [Member]
 
Contracts-in-Process:  
Amounts billed 34
Unbilled receivables 1,311
Contracts-in-process, as reported 1,345
Commercial Contracts [Member]
 
Contracts-in-Process:  
Amounts billed 107,886
Unbilled receivables 50,030
Contracts-in-process, as reported $ 157,916