Pension and Retirement Benefit Plans (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2021 |
Dec. 31, 2021 |
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| Retirement Plan [Member] | |||||
| Pension and Retirement Benefit Plans (Details) [Line Items] | |||||
| Projected benefit obligation, amount | $ 23,800,000 | ||||
| Fair value of plan assets | 20,000,000 | ||||
| Underfunded amount | 3,800,000 | ||||
| Retirement plan’s net periodic benefit | $ 8,000 | ||||
| Expected return on plan assets | 273,000 | $ 238,000 | $ 546,000 | $ 476,000 | |
| Interest cost | 164,000 | 151,000 | 328,000 | 302,000 | |
| Service cost | 101,000 | 109,000 | 202,000 | 218,000 | |
| Net periodic expense (income) | (22,000) | 16,000 | 44,000 | ||
| Postretirement Plan [Member] | |||||
| Pension and Retirement Benefit Plans (Details) [Line Items] | |||||
| Projected benefit obligation, amount | $ 4,300,000 | ||||
| Interest cost | 26,000 | 10,000 | 52,000 | 20,000 | |
| Service cost | 6,000 | 26,000 | 12,000 | 52,000 | |
| Net periodic expense (income) | $ 32,000 | 42,000 | $ 64,000 | 84,000 | |
| Amortization expense | $ 6,000 | $ 12,000 | |||
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- References No definition available.
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 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
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. 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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