Employer identification number or pension plan number.

No definition available.

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Period Type:	duration

- Definition

Indicates certified zone status of multiemployer pension plan determined to be individually significant. Acceptable values are "Green", "Yellow", "Orange", "Red", "Other", and "NA".

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Expiration date of collective-bargaining arrangement (CBA) requiring contribution to multiemployer pension plan determined to be individually significant, in YYYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of cost for employer contribution to multiemployer pension plan determined to be individually significant.

+ References

+ Details

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Period Type:	duration

- Definition

Indicates whether funding improvement plan or rehabilitation plan was implemented or pending for multiemployer pension plan, determined to be individually significant. Acceptable values are "No", "Pending", "Implemented", "Other", and "NA".

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Plan number for multiemployer pension plan determined to be individually significant, in three-digit numeric format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	us-types:threeDigitItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates whether employer paid surcharge to multiemployer pension plan determined to be individually significant. Acceptable values are "No", "Yes" and "NA".

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- 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

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+ Details

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Participation and Contributions to Multi Employer Pension Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Multiemployer Plans [Line Items]
Company Contributions	$ 9,311	$ 9,637	$ 9,603
New England Teamsters & Trucking Industry Pension Fund
Multiemployer Plans [Line Items]
EIN	046372430
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP / RP Status Pending / Implemented	Implemented
Company Contributions	$ 2,721	$ 2,605	2,563
Surcharge Imposed	No
New England Teamsters & Trucking Industry Pension Fund \| Minimum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Apr. 30, 2024
New England Teamsters & Trucking Industry Pension Fund \| Maximum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Apr. 30, 2028
Westchester Teamsters Pension Fund
Multiemployer Plans [Line Items]
EIN	136123973
Pension Plan Number	001
Pension Protection Act Zone Status	Green	Green
FIP / RP Status Pending / Implemented	NA
Company Contributions	$ 964	$ 1,153	1,100
Surcharge Imposed	No
Westchester Teamsters Pension Fund \| Minimum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Jan. 31, 2024
Westchester Teamsters Pension Fund \| Maximum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Dec. 31, 2024
Local 553 Pension Fund
Multiemployer Plans [Line Items]
EIN	136637826
Pension Plan Number	001
Pension Protection Act Zone Status	Green	Green
FIP / RP Status Pending / Implemented	NA
Company Contributions	$ 2,516	$ 2,741	2,841
Surcharge Imposed	No
Local 553 Pension Fund \| Minimum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Dec. 15, 2025
Local 553 Pension Fund \| Maximum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Jan. 15, 2026
Local 463 Pension Fund
Multiemployer Plans [Line Items]
EIN	111800729
Pension Plan Number	001
Pension Protection Act Zone Status	Green	Green
FIP / RP Status Pending / Implemented	NA
Company Contributions	$ 125	$ 133	138
Surcharge Imposed	No
Local 463 Pension Fund \| Minimum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Jun. 30, 2025
Local 463 Pension Fund \| Maximum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Feb. 28, 2026
IAM National Pension Fund
Multiemployer Plans [Line Items]
EIN	516031295
Pension Plan Number	002
Pension Protection Act Zone Status	Red	Red
FIP / RP Status Pending / Implemented	Implemented
Company Contributions	$ 2,477	$ 2,585	2,532
Surcharge Imposed	Yes
IAM National Pension Fund \| Minimum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Oct. 31, 2023
IAM National Pension Fund \| Maximum
Multiemployer Plans [Line Items]
Expiration Date of Collective-Bargaining Agreements, Date	Jun. 30, 2026
All Other Multiemployer Pension Plans
Multiemployer Plans [Line Items]
Company Contributions	$ 481	$ 391	411
Teamsters Local 469 Pension Plan
Multiemployer Plans [Line Items]
EIN	226172237
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP / RP Status Pending / Implemented	Implemented
Company Contributions	$ 18	$ 21	11
Surcharge Imposed	Yes
Expiration Date of Collective-Bargaining Agreements, Date	Aug. 31, 2024
Local 445 Pension Fund
Multiemployer Plans [Line Items]
EIN	131864489
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP / RP Status Pending / Implemented	Implemented
Company Contributions	$ 9	$ 8	$ 7
Surcharge Imposed	Yes
Expiration Date of Collective-Bargaining Agreements, Date	Oct. 31, 2024