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Employee Benefit Plans 1 (Details) - Pension Benefits | 12 Months Ended |
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Dec. 31, 2021 participant item | Dec. 31, 2020
Employee benefit plans |  |
Minimum age for eligibility under the Pension Plan | item | 21 |
Minimum period of service for eligibility under the Pension Plan | 5 years |
Normal retirement benefit (as a percent) | 2.00% |
Defined benefit plan number of highest consecutive years average earnings used in computing retirement benefit | 5 years |
Maximum number of years of credited service considered in determining retirement benefit | 40 years |
Number of participants in the Pension Plan | participant | 918 |
Eligibility for employer matching contributions, period of service | 3 years |
Discount rate | 2.89% | 2.55%
Minimum |  |
Employee benefit plans |  |
Percentage of participant's eligible pay contributed to the plan by the employer | 3.00% |
Maximum |  |
Employee benefit plans |  |
Percentage of participant's eligible pay contributed to the plan by the employer | 5.25% |

X
- Definition Represents the maximum number of years of credited service used in computing the retirement benefit. + References No definition available. + Details
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- Definition Represents the minimum age required by the employees to be eligible to participate in the plan. + References No definition available. + Details
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- Definition Represents the minimum period of service required in order to participate in the plan. + References No definition available. + Details
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- Definition Represents the number of highest consecutive years' average earnings used in computing the retirement benefit. + References No definition available. + Details
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- Definition Defined Benefit Plan, Number of Employees Covered + References No definition available. + Details
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- Definition Represents the percentage of normal retirement benefit. + References No definition available. + Details
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- Definition The period of service required in order to be eligible for the employer's matching contributions. + References No definition available. + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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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. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Details
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- Details
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- Details
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