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Accumulated Other Comprehensive (Loss) Income (Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net gain (loss) on investment securities |  | $ (15) | $ 71 | $ 1,599
Interest income |  | 167,372 | 154,730 | 138,985
Income (loss) before income taxes |  | 70,970 | 97,222 | 45,723
Income tax (expense) benefit |  | (14,397) | (19,525) | (7,391)
Net income (loss) |  | 56,573 | 77,697 | 38,332
Securities Available for Sale and Transferred Securities [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassification before tax | [1] | (117) | (139) | 1,281
Reclassification tax | [1] | 30 | 36 | (329)
Total reclassified for the period | [1] | (87) | (103) | 952
Prior Service Credit [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassification before tax | [2] | 0 | 3 |
Net Actuarial Losses [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassification before tax | [2] | (296) | (744) |
Pension And Post-Retirement Obligations [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassification before tax |  | (296) | (741) |
Reclassification tax |  | 76 | 190 |
Total reclassified for the period |  | (220) | (551) | (933)
AOCI Attributable to Parent [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total reclassified for the period |  | (307) | (654) | $ 19
Reclassification out of Accumulated Other Comprehensive Income [Member] | Securities Available for Sale and Transferred Securities [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net gain (loss) on investment securities |  | (15) | 71 |
Interest income |  | (102) | (210) |
Income (loss) before income taxes |  | (117) | (139) |
Income tax (expense) benefit |  | 30 | 36 |
Net income (loss) |  | $ (87) | $ (103) |
[1] | Includes amounts related to the amortization/accretion of unrealized net gains and losses related to the Company’s reclassification of available for sale investment securities to the held to maturity category. The unrealized net gains/losses will be amortized/accreted over the remaining life of the investment securities as an adjustment of yield.
[2] | These items are included in the computation of net periodic pension expense. See Note 21 – Employee Benefit Plans for additional information.

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