Receivables (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 29, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable
Amounts billed under long term contracts	$ 156,414	$ 148,087
Unbilled recoverable costs and accrued profits under long-term contracts	$ 316,489	282,154
Percent of unbilled amounts excepted to be collected within one year	99.00%
Government \| UNITED STATES
Accounts, Notes, Loans and Financing Receivable
Amounts billed under long term contracts	$ 6,106	2,966
Unbilled recoverable costs and accrued profits under long-term contracts	25,915	16,720
Boeing
Accounts, Notes, Loans and Financing Receivable
Receivables from customers	$ 178,798	$ 142,876

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(c))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 310
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68065756&loc=d3e49354-109356

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Amount due from customers for fees and charges arising from transactions related to the entity's brokerage activities and operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 912
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