Pension and Other Postretirement Benefits - Projected Benefit Obligation and Accumulated Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|---|
| Projected benefit obligation in excess of Pension Plan assets: | |||
| Projected benefit obligation | $ 11,324 | $ 9,717 | |
| Fair value of Pension Plan assets | 10,713 | 7,567 | $ 6,615 |
| Plan assets in excess of accumulated benefit obligation: | |||
| Accumulated benefit obligation | 7,009 | 6,348 | |
| Fair value of Pension Plan assets | $ 10,713 | $ 7,567 |
| X | ||||||||||
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
|