| Pension and Other Postretirement Benefits - Amounts Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended | |
|---|---|---|
| Dec. 31, 2021 | Dec. 31, 2020 | |
| Share-based Payment Arrangement [Abstract] | ||
| Net actuarial loss | $ (1,275) | $ (3,409) | 
| Amounts recognized in accumulated other comprehensive loss, before taxes | (1,275) | (3,409) | 
| Income tax benefit | 268 | 716 | 
| Amounts recognized in accumulated other comprehensive loss, after taxes | $ (1,007) | $ (2,693) | 
| X | ||||||||||
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- Definition Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- References No definition available. 
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- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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