Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 13, 2024 |
Jul. 15, 2023 |
Jul. 13, 2024 |
Jul. 15, 2023 |
|
| Pension plans | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | $ 168 | $ 157 | $ 392 | $ 367 |
| Interest cost | 272 | 301 | 634 | 702 |
| Expected return on plan assets | (370) | (360) | (864) | (840) |
| Amortization of prior service cost (credit) | 13 | 13 | 31 | 31 |
| Amortization of net (gain) loss | 10 | 40 | 23 | 93 |
| Total net periodic pension cost (credit) | 93 | 151 | 216 | 353 |
| Postretirement Benefit Plan | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | 42 | 41 | 98 | 96 |
| Interest cost | 53 | 55 | 123 | 128 |
| Amortization of prior service cost (credit) | (54) | (54) | (126) | (126) |
| Amortization of net (gain) loss | (42) | (57) | (97) | (133) |
| Total net periodic pension cost (credit) | $ (1) | $ (15) | $ (2) | $ (35) |
| X | ||||||||||
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|