Supplemental Retirement Plan and Related Post Retirement Benefits - Summary of the Components of Net Periodic Cost (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
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Sep. 29, 2018
USD ($)
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Sep. 30, 2017
USD ($)
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Sep. 29, 2018
USD ($)
retirement_plan
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Sep. 30, 2017
USD ($)
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| Retirement Benefits [Abstract] | ||||
| Number of non-qualified supplemental retirement defined benefit plans | retirement_plan | 2 | |||
| SERP | ||||
| Defined Benefit Plan Disclosure | ||||
| Service Cost | $ 50 | $ 46 | $ 150 | $ 138 |
| Interest Cost | 225 | 224 | 675 | 672 |
| Amortization of Prior Service Cost | 97 | 97 | 291 | 291 |
| Amortization of Net Actuarial Losses | 157 | 93 | 471 | 279 |
| Net Periodic Cost | 529 | 460 | 1,587 | 1,380 |
| SERP | SERP Medical | ||||
| Defined Benefit Plan Disclosure | ||||
| Service Cost | 4 | 2 | 12 | 6 |
| Interest Cost | 11 | 10 | 34 | 30 |
| Amortization of Prior Service Cost | 4 | 4 | 12 | 12 |
| Amortization of Net Actuarial Losses | 15 | 7 | 44 | 21 |
| Net Periodic Cost | $ 34 | $ 23 | $ 102 | $ 69 |
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- References No definition available.
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- References No definition available.
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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
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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. No definition available.
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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/disclosureRef
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