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Pension Plans and Other Postretirement Benefits | 9 Months Ended
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Jun. 30, 2018
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract] |
Pension Plans and Other Postretirement Benefits |
1 3. | Pension Plans and Other Postretirement Benefits
The following table provides the components of net periodic benefit costs:
|  | Pension Benefits |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | June 30, |  |  | June 24, |  |  | June 30, |  |  | June 24, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Interest cost |  | $ | 944 |  |  | $ | 1,041 |  |  | $ | 2,832 |  |  | $ | 3,123 |
Expected return on plan assets |  |  | (473 | ) |  |  | (537 | ) |  |  | (1,420 | ) |  |  | (1,611 | )
Amortization of net loss |  |  | 920 |  |  |  | 1,301 |  |  |  | 2,762 |  |  |  | 3,901 |
Net periodic benefit cost |  | $ | 1,391 |  |  | $ | 1,805 |  |  | $ | 4,174 |  |  | $ | 5,413 |
|  | Postretirement Benefits |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | June 30, |  |  | June 24, |  |  | June 30, |  |  | June 24, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Interest cost |  | $ | 69 |  |  | $ | 96 |  |  | $ | 208 |  |  | $ | 288 |
Amortization of prior service credits |  |  | (124 | ) |  |  | — |  |  |  | (374 | ) |  |  | — |
Amortization of net (gain) |  |  | (163 | ) |  |  | (98 | ) |  |  | (491 | ) |  |  | (292 | )
Net periodic benefit cost |  | $ | (218 | ) |  | $ | (2 | ) |  | $ | (657 | ) |  | $ | (4 | )
The Partnership expects to contribute approximately $4,764 to the defined benefit pension plan during fiscal 2018, of which $3,839 was contributed during the nine months ended June 30, 2018. The projected annual contribution requirements related to the Partnership’s postretirement health care and life insurance benefit plan for fiscal 2018 is $1,243, of which $847 was contributed during the nine months ended June 30, 2018. The Partnership contributes to multi-employer pension plans (“MEPPs”) in accordance with various collective bargaining agreements covering union employees. As one of the many participating employers in these MEPPs, the Partnership is responsible with the other participating employers for any plan underfunding. As of June 30, 2018 and September 30, 2017, the Partnership’s estimated obligation to these MEPPs was $22,773 and $23,665, respectively, as a result of its voluntary full withdrawal from certain MEPPs.

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- References No definition available. + Details
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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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