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Accumulated Other Comprehensive Income (Loss) - Other Comprehensive Income (Loss) and Related Tax Effects (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss)      
Unrealized loss on investment securities available-for-sale $ (66,435) $ (11,487) $ 8,779
Net loss (gain) on the sale of investment securities available-for-sale 1,976   (918)
Other comprehensive (loss) income on available-for-sale debt securities (64,459) (11,487) 7,861
Amortization of actuarial loss (2) 198 301 218
Actuarial gain (loss) 172 1,808 (1,616)
Net change in benefit plan liabilities 370 2,109 (1,398)
Net change in derivatives (728) (322) 315
Other comprehensive (loss) income (64,817) (9,700) 6,778
Income (benefit) tax (13,995) (2,037) 1,424
Other comprehensive (loss) income $ (50,822) $ (7,663) $ 5,354