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Receivables (Schedule of Receivables) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jan. 02, 2016
Oct. 03, 2015
Receivables [Abstract]    
Accounts receivable $ 297,578 $ 291,188
Long-term contract receivable - Amounts billed 98,872 113,565
Long-term contract receivable - Unbilled recoverable costs and accrued profits 284,048 286,395
Total long-term contract receivables 382,920 399,960
Other 15,626 12,557
Total receivables 696,124 703,705
Less allowance for doubtful accounts (5,248) (5,286)
Receivables $ 690,876 $ 698,419