Pension Plans. (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Pension Plans. (Details) [Line Items] | |||
| Pension plan, description | The Retirement Plan’s current investment target allocations are 50% equities and 50% debt. The pension committee reviews the actual asset allocation in light of these targets periodically and rebalances investments as necessary. | ||
| Percentage of adjusting rate assumed health care | For purposes of determining the cost and obligation for pre-Medicare postretirement medical benefits, a 7.00% annual rate of increase in the per capita cost of covered benefits (i.e., health care trend rate) was assumed for the Postretirement Plan in 2022, adjusted to a rate of 4.50% in 2031. | ||
| Retirement Plan [Member] | |||
| Pension Plans. (Details) [Line Items] | |||
| Net periodic benefit cost | $ 192 | $ 374 | |
| Forecast [Member] | Retirement Plan [Member] | |||
| Pension Plans. (Details) [Line Items] | |||
| Expected contributions by the company | $ 800 | ||
| Net periodic benefit cost | $ 200 | ||
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- References No definition available.
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- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. 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 Description of the nature of multiemployer plan benefits as well as who is covered by the benefits. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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