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Securities - Securities with Unrealized Losses Aggregated by Investment Category and Time with Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value $ 1,812 $ 153,118
Less than 12 months, unrealized losses 29 15,751
More than 12 months, fair value 501,940 375,245
More than 12 months, unrealized losses 69,626 73,290
Total, fair value 503,752 528,363
Total, unrealized losses 69,655 89,041
U.S. Government and Federal Agency [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value 0 0
Less than 12 months, unrealized losses 0 0
More than 12 months, fair value 0 0
More than 12 months, unrealized losses 0 0
Total, fair value 0 0
Total, unrealized losses 0 0
U.S. Treasury Notes and Bonds [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value 0 0
Less than 12 months, unrealized losses 0 0
More than 12 months, fair value 80,194 78,204
More than 12 months, unrealized losses 10,151 12,606
Total, fair value 80,194 78,204
Total, unrealized losses 10,151 12,606
State and Municipal [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value 557 89,158
Less than 12 months, unrealized losses 6 12,612
More than 12 months, fair value 234,125 140,390
More than 12 months, unrealized losses 35,230 34,939
Total, fair value 234,682 229,548
Total, unrealized losses 35,236 47,551
Mortgage-backed [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value 1,255 63,249
Less than 12 months, unrealized losses 23 3,093
More than 12 months, fair value 176,400 144,318
More than 12 months, unrealized losses 23,882 25,047
Total, fair value 177,655 207,567
Total, unrealized losses 23,905 28,140
Corporate [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value 0 711
Less than 12 months, unrealized losses 0 46
More than 12 months, fair value 204 0
More than 12 months, unrealized losses 46 0
Total, fair value 204 711
Total, unrealized losses 46 46
Asset-backed Securities [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, fair value 0 0
Less than 12 months, unrealized losses 0 0
More than 12 months, fair value 11,017 12,333
More than 12 months, unrealized losses 317 698
Total, fair value 11,017 12,333
Total, unrealized losses $ 317 $ 698