Sales revenue service net percentage.

No definition available.

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Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	instant

- Definition

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.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
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-Paragraph 1
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Balance Type:	credit
Period Type:	duration

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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-Paragraph 1
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Balance Type:	debit
Period Type:	instant

- Definition

Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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- Details

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Description of Business and Significant Accounting Policies - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Retained earnings	$ 1,178,677,000	$ 1,062,246,000			$ 1,070,061,000
Exchange gains (losses) on foreign currency transactions	500,000	1,200,000	$ 2,300,000
Forward currency exchange contracts treated as cash flow hedges and recorded in accumulated other comprehensive loss	1,050,000	(3,942,000)	$ 2,405,000
Fair value of debt	252,300,000	151,900,000
Carrying value of debt	245,000,000	$ 150,000,000.0
ASU 2014-09
Disaggregation of Revenue [Line Items]
Retained earnings	$ 9,321,000
ASU 2014-09 \| Adjustments due to the adoption of ASU 2014-09
Disaggregation of Revenue [Line Items]
Retained earnings					$ 7,815,000
Minimum \| ASU 2016-02
Disaggregation of Revenue [Line Items]
Retained earnings				$ 0
Operating Lease, Right-of-Use Asset				35,000,000
Operating Lease, Liability				35,000,000
Maximum \| ASU 2016-02
Disaggregation of Revenue [Line Items]
Retained earnings				(5,000,000)
Operating Lease, Right-of-Use Asset				55,000,000
Operating Lease, Liability				$ 55,000,000
Engineering Design and Development Services
Disaggregation of Revenue [Line Items]
Percentage of consolidated net sales (less than)	5.00%	5.00%	5.00%