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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance $ 292,295 $ 472,432 $ 350,097
Other comprehensive income (loss) before reclassification 38,556 (220,113)  
Amounts reclassified from accumulated other comprehensive income (loss) (620) 328  
Other comprehensive income (loss), net of tax 37,936 (219,785) (12,737)
Balance 404,415 292,295 472,432
Net unrealized holding gains (losses) on available for sale securities      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance (210,489) 9,293  
Other comprehensive income (loss) before reclassification 38,557 (220,110)  
Amounts reclassified from accumulated other comprehensive income (loss) 393 328  
Other comprehensive income (loss), net of tax 38,950 (219,782)  
Balance (171,539) (210,489) 9,293
Reclassification adjustment for (gains) losses realized in income on fair value hedge      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance 0 0  
Other comprehensive income (loss) before reclassification 0 0  
Amounts reclassified from accumulated other comprehensive income (loss) (1,013) 0  
Other comprehensive income (loss), net of tax (1,013) 0  
Balance (1,013) 0 0
Change in funded status of post-retirement plan      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance (1) 2  
Other comprehensive income (loss) before reclassification (1) (3)  
Amounts reclassified from accumulated other comprehensive income (loss) 0 0  
Other comprehensive income (loss), net of tax (1) (3)  
Balance (2) (1) 2
Accumulated Other Comprehensive (Loss) Income      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance (210,490) 9,295 22,032
Other comprehensive income (loss), net of tax 37,936 (219,785) (12,737)
Balance $ (172,554) $ (210,490) $ 9,295