CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2022 |
Jun. 30, 2022 |
Mar. 31, 2022 |
Jun. 30, 2022 |
Sep. 30, 2022 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Income Statement [Abstract] | ||||||||
| Net Income Attributable to Common Shareowners | $ 9,605 | $ 7,260 | $ 6,938 | $ 14,198 | $ 23,803 | $ 33,412 | $ 33,396 | $ 31,576 |
| Investment Securities: | ||||||||
| Change in net unrealized (loss) gain on securities available for sale | (2,618) | (10,714) | (25,445) | (36,158) | (38,778) | (35,814) | (9,673) | 2,437 |
| Unrealized losses on securities transferred from available for sale to held to maturity | (9,384) | 0 | 0 | (9,384) | (9,384) | 0 | 0 | |
| Amortization of unrealized losses on securities transferred from available for sale to held to maturity | 586 | 0 | 0 | 586 | 1,469 | 26 | 36 | |
| Change in net unrealized gain on effective cash flow derivative | 1,407 | 1,161 | 1,836 | 2,997 | 4,403 | 4,146 | 1,476 | 574 |
| Benefit Plans: | ||||||||
| Reclassification adjustment for amortization of prior service cost | 292 | 234 | (880) | |||||
| Reclassification adjustment for amortization of net loss | 4,752 | 10,806 | 4,391 | |||||
| Defined benefit plan settlement | 102 | 169 | 209 | 378 | 480 | 2,321 | 3,072 | 0 |
| Current year actuarial gain (loss) | 4,223 | 31,339 | (27,924) | |||||
| Total Benefit Plans | 102 | 169 | 209 | 378 | 480 | 11,588 | 45,451 | (24,413) |
| Other comprehensive (loss) income, before tax: | (9,907) | (9,384) | (23,400) | (32,783) | (42,693) | (27,995) | 37,280 | (21,366) |
| Deferred tax (expense) benefit related to other comprehensive income | 2,469 | 2,362 | 5,871 | 8,232 | 10,704 | 6,980 | (9,352) | 5,405 |
| Other comprehensive (loss) income, net of tax | (7,438) | (7,022) | (17,529) | (24,551) | (31,989) | (21,015) | 27,928 | (15,961) |
| TOTAL COMPREHENSIVE INCOME | $ 2,167 | $ 238 | $ (10,591) | $ (10,353) | $ (8,186) | $ 12,397 | $ 61,324 | $ 15,615 |
| X | ||||||||||
- Definition Unrealized losses on securities transferred from available for sale to held to maturity No definition available.
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount, before tax, of adjustment from accumulated other comprehensive income (loss) for amortization of gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from transfer to investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before tax, after reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, before tax, of increase (decrease) to other comprehensive income from settlement and curtailment gain (loss) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, before tax and adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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