XML 52 R41.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Employee Benefit Plans (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2022
Retirement Benefits [Abstract] |
Participation and Contributions to Multiemployer Pension Plans |
|  |  |  | Pension Protection Act Zone Status |  | FIP / RP Status |  | Company Contributions (in thousands) |  |  |  |  |
Pension Fund |  | EIN / Pension Plan Number |  | 2022 |  | 2021 |  | Pending / Implemented |  | 2022 |  |  | 2021 |  |  | 2020 |  |  | Surcharge Imposed |  | Expiration Date of Collective- Bargaining Agreements
New England Teamsters and Trucking Industry Pension Fund |  | 04-6372430/ 001 |  | Red |  | Red |  | Yes / Implemented |  | $ | 2,605 |  |  | $ | 2,563 |  |  | $ | 2,659 |  |  | No |  | 9/30/22 to 8/31/27
Westchester Teamsters Pension Fund |  | 13-6123973/ 001 |  | Green |  | Green |  | N/A |  |  | 1,153 |  |  |  | 1,100 |  |  |  | 887 |  |  | No |  | 1/31/24 to 12/31/24
Local 553 Pension Fund |  | 13-6637826/ 001 |  | Green |  | Green |  | N/A |  |  | 2,741 |  |  |  | 2,841 |  |  |  | 2,678 |  |  | No |  | 1/15/2023
Local 463 Pension Fund |  | 11-1800729/ 001 |  | Green |  | Green |  | N/A |  |  | 133 |  |  |  | 138 |  |  |  | 138 |  |  | No |  | 2/28/23 to 6/30/25
IAM National Pension Fund |  | 51-6031295/ 002 |  | Red |  | Red |  | Yes / Implemented |  |  | 2,585 |  |  |  | 2,532 |  |  |  | 2,822 |  |  | Yes |  | 5/31/23 to 9/30/25
Teamsters Local 469 Pension Plan |  | 22-6172237 / 001 |  | Red |  | Red |  | Yes / Implemented |  |  | 21 |  |  |  | 11 |  |  |  | 20 |  |  | Yes |  | 8/31/24
Local 445 Pension Fund |  | 13-1864489/ 001 |  | Red |  | Red |  | Yes / Implemented |  |  | 8 |  |  |  | 7 |  |  |  | 5 |  |  | Yes |  | 10/31/24
All Other Multiemployer Pension Plans |  |  |  |  |  |  |  |  |  |  | 391 |  |  |  | 411 |  |  |  | 448 |  |  |  |  |
|  |  |  |  |  |  |  | Total Contributions |  | $ | 9,637 |  |  | $ | 9,603 |  |  | $ | 9,657 |  |  |  |  |
Net Periodic Benefit Cost for Period Reconciliation of Changes in Plan Assets Projected Benefit Obligations and Amounts Recognized in Other Comprehensive Income and Accumulated Other Comprehensive Income | The following table provides the net periodic benefit cost for the period, a reconciliation of the changes in the Plan assets, projected benefit obligations, and the amounts recognized in other comprehensive income and accumulated other comprehensive income at the dates indicated using a measurement date of September 30 (in thousands):
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Gross Pension |
|  | Net Periodic |  |  |  |  |  | Fair |  |  |  |  |  |  |  |  | Related |
|  | Pension |  |  |  |  |  | Value of |  |  |  |  |  |  |  |  | Accumulated |
|  | Cost in |  |  |  |  |  | Pension |  |  | Projected |  |  | Other |  |  | Other |
|  | Income |  |  |  |  |  | Plan |  |  | Benefit |  |  | Comprehensive |  |  | Comprehensive |
Debit / (Credit) |  | Statement |  |  | Cash |  |  | Assets |  |  | Obligation |  |  | (Income) / Loss |  |  | Income |
Fiscal Year 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  |  |  | $ | 66,838 |  |  | $ | (65,007 | ) |  |  |  |  | $ | 15,104 |
Interest cost |  |  | 1,875 |  |  |  |  |  |  |  |  |  | (1,875 | ) |  |  |  |  |  |
Actual return on plan assets |  |  | (6,538 | ) |  |  |  |  |  | 6,538 |  |  |  |  |  |  |  |  |  |
Employer contributions |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |  |
Benefit payments |  |  |  |  |  |  |  |  | (4,288 | ) |  |  | 4,288 |  |  |  |  |  |  |
Investment and other expenses |  |  | (539 | ) |  |  |  |  |  |  |  |  | 539 |  |  |  |  |  |  |
Difference between actual and expected return on plan assets |  |  | 4,268 |  |  |  |  |  |  |  |  |  |  |  |  | (4,268 | ) |  |  |
Anticipated expenses |  |  | 334 |  |  |  |  |  |  |  |  |  | (334 | ) |  |  |  |  |  |
Actuarial loss |  |  |  |  |  |  |  |  |  |  |  | (3,009 | ) |  |  | 3,009 |  |  |  |
Amortization of unrecognized net actuarial loss |  |  | 1,617 |  |  |  |  |  |  |  |  |  |  |  |  | (1,617 | ) |  |  |
Annual cost/change |  | $ | 1,017 |  |  | $ | — |  |  |  | 2,250 |  |  |  | (391 | ) |  | $ | (2,876 | ) |  |  | (2,876 | )
Ending balance |  |  |  |  |  |  |  | $ | 69,088 |  |  | $ | (65,398 | ) |  |  |  |  | $ | 12,228 |
Funded status at the end of the year |  |  |  |  |  |  |  |  |  |  | $ | 3,690 |  |  |  |  |  |  |
Fiscal Year 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest cost |  |  | 1,541 |  |  |  |  |  |  |  |  |  | (1,541 | ) |  |  |  |  |  |
Actual return on plan assets |  |  | (678 | ) |  |  |  |  |  | 678 |  |  |  |  |  |  |  |  |  |
Employer contributions |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |  |
Benefit payments |  |  |  |  |  |  |  |  | (4,429 | ) |  |  | 4,429 |  |  |  |  |  |  |
Investment and other expenses |  |  | (377 | ) |  |  |  |  |  |  |  |  | 377 |  |  |  |  |  |  |
Difference between actual and expected return on plan assets |  |  | (1,386 | ) |  |  |  |  |  |  |  |  |  |  |  | 1,386 |  |  |  |
Anticipated expenses |  |  | 345 |  |  |  |  |  |  |  |  |  | (345 | ) |  |  |  |  |  |
Actuarial gain |  |  |  |  |  |  |  |  |  |  |  | 1,184 |  |  |  | (1,184 | ) |  |  |
Amortization of unrecognized net actuarial loss |  |  | 937 |  |  |  |  |  |  |  |  |  |  |  |  | (937 | ) |  |  |
Annual cost/change |  | $ | 382 |  |  | $ | — |  |  |  | (3,751 | ) |  |  | 4,104 |  |  | $ | (735 | ) |  |  | (735 | )
Ending balance |  |  |  |  |  |  |  | $ | 65,337 |  |  | $ | (61,294 | ) |  |  |  |  | $ | 11,493 |
Funded status at the end of the year |  |  |  |  |  |  |  |  |  |  | $ | 4,043 |  |  |  |  |  |  |
Fiscal Year 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest cost |  |  | 1,560 |  |  |  |  |  |  |  |  |  | (1,560 | ) |  |  |  |  |  |
Actual return on plan assets |  |  | 13,658 |  |  |  |  |  |  | (13,658 | ) |  |  |  |  |  |  |  |  |
Employer contributions |  |  |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |  |
Benefit payments |  |  |  |  |  |  |  |  | (4,225 | ) |  |  | 4,225 |  |  |  |  |  |  |
Investment and other expenses |  |  | (507 | ) |  |  |  |  |  |  |  |  | 507 |  |  |  |  |  |  |
Difference between actual and expected return on plan assets |  |  | (15,200 | ) |  |  |  |  |  |  |  |  |  |  |  | 15,200 |  |  |  |
Anticipated expenses |  |  | — |  |  |  |  |  |  |  |  |  | — |  |  |  |  |  |  |
Actuarial gain |  |  |  |  |  |  |  |  |  |  |  | 13,869 |  |  |  | (13,869 | ) |  |  |
Amortization of unrecognized net actuarial loss |  |  | 896 |  |  |  |  |  |  |  |  |  |  |  |  | (896 | ) |  |  |
Annual cost/change |  | $ | 407 |  |  | $ | — |  |  |  | (17,883 | ) |  |  | 17,041 |  |  | $ | 435 |  |  |  | 435 |
Ending balance |  |  |  |  |  |  |  | $ | 47,454 |  |  | $ | (44,253 | ) |  |  |  |  | $ | 11,928 |
Funded status at the end of the year |  |  |  |  |  |  |  |  |  |  | $ | 3,201 |  |  |  |  |  |  |
Weighted-Average Assumptions Used in Measurement of Partnership's Benefit Obligation |
|  | September 30,
Weighted-Average Assumptions Used in the Measurement of the Company’s Benefit Obligation |  | 2022 |  | 2021 |  | 2020
Discount rate at year end date |  | 5.50% |  | 2.65% |  | 2.45%
Expected return on plan assets for the year ended |  | 3.77% |  | 3.66% |  | 4.36%
Rate of compensation increase |  | N/A |  | N/A |  | N/A
Fair Values and Percentage of Company's Pension Plan Assets by Asset Category | The fair values and percentage of the Company’s pension plan assets by asset category are as follows (in thousands):
|  | September 30,
|  | 2022 |  | 2021
|  |  |  |  | Concentration |  |  |  |  | Concentration
Asset Category |  | Level 1 |  |  | Percentage |  | Level 1 |  |  | Percentage
Corporate and U.S. government bond fund (1) |  | $ | 42,921 |  |  | 90% |  | $ | 59,068 |  |  | 90%
U.S. large-cap equity (1) |  |  | 3,411 |  |  | 7% |  |  | 4,765 |  |  | 7%
International equity (1) |  |  | 817 |  |  | 2% |  |  | 1,165 |  |  | 2%
Cash |  |  | 305 |  |  | 1% |  |  | 339 |  |  | 1%
Total |  | $ | 47,454 |  |  | 100% |  | $ | 65,337 |  |  | 100%
Represent investments in Vanguard funds that seek to replicate the asset category description.

X
- Definition Defined Benefit Plan Net Periodic Benefit Cost Fair Value Of Plan Assets Projected Benefit Obligation And Other Comprehensive Income Table [Text Block] + References No definition available. + Details
Name: | sgu_DefinedBenefitPlanNetPeriodicBenefitCostFairValueOfPlanAssetsProjectedBenefitObligationAndOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | sgu_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Defined Benefit Plan Weighted Average Asset Fair Value And Percentage Allocations Table [Text Block] + References No definition available. + Details
Name: | sgu_DefinedBenefitPlanWeightedAverageAssetFairValueAndPercentageAllocationsTableTextBlock
Namespace Prefix: | sgu_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAssumptionsUsedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about multiemployer plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(2) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(2) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(1) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
Name: | us-gaap_ScheduleOfMultiemployerPlansTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration