Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Represents the portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing the amount excluded from the assessment of hedge effectiveness.

+ References

No definition available.

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- Definition

Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion

+ References

No definition available.

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- Definition

Represents the number of derivative agreements entered into by the entity during the reporting period.

+ References

No definition available.

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- 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.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount before tax 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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
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-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580

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Derivative Financial Instruments - Narrative (Details)	3 Months Ended		12 Months Ended
Derivative Financial Instruments - Narrative (Details)	Dec. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) agreement	Sep. 30, 2018 USD ($)
Interest rate swap agreements \| Designated as cash flow hedges \| Derivatives designated as hedging instruments
Derivative Financial Instruments
Number of derivative agreements \| agreement		5
Notional amount	$ 250,000,000
Fixed rate	2.79%
Effective portion of interest rate swap agreements	$ 2,800,000	$ (1,300,000)
Foreign currency forward contracts and interest rate swap agreements \| Derivatives designated as hedging instruments
Derivative Financial Instruments
Effective portion of interest rate swap agreements	(4,000,000)		$ 800,000
Ineffective portion of derivative instruments	0		0
Amounts excluded from effectiveness testing	0		$ 0
Amended Credit Agreement \| Term Loan Facility
Derivative Financial Instruments
Maximum borrowing capacity	$ 250,000,000.0