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Securities - Unrealized Loss Positions (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 41 45
12 months or more in an unrealized loss position | security 306 317
Total | security 347 362
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 805 $ 1,010
12 months or more in an unrealized loss position 61,339 69,769
Total 62,144 70,779
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 146,016 183,156
12 months or more in an unrealized loss position 575,018 667,783
Total $ 721,034 850,939
Effective duration (in years) 3 years  
Credit losses were determined $ 0 $ 0
Provision for credit losses on securities $ 0  
U.S. Treasury    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security   4
12 months or more in an unrealized loss position | security   1
Total | security   5
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position   $ 72
12 months or more in an unrealized loss position   387
Total   459
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position   49,788
12 months or more in an unrealized loss position   49,547
Total   $ 99,335
U.S. government agencies    
Securities Available-for-Sale, Number of Securities    
12 months or more in an unrealized loss position | security 8 8
Total | security 8 8
Securities Available-for-Sale, Unrealized Losses    
12 months or more in an unrealized loss position $ 986 $ 1,388
Total 986 1,388
Securities Available-for-Sale, Fair Value    
12 months or more in an unrealized loss position 38,047 37,814
Total $ 38,047 $ 37,814
U.S. government agencies mortgage-backed    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 1 1
12 months or more in an unrealized loss position | security 128 128
Total | security 129 129
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 67 $ 447
12 months or more in an unrealized loss position 9,682 11,517
Total 9,749 11,964
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 10,642 10,296
12 months or more in an unrealized loss position 88,287 89,981
Total $ 98,929 $ 100,277
States and political subdivisions    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 31 31
12 months or more in an unrealized loss position | security 26 27
Total | security 57 58
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 669 $ 455
12 months or more in an unrealized loss position 10,842 11,322
Total 11,511 11,777
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 87,732 85,457
12 months or more in an unrealized loss position 105,681 111,308
Total $ 193,413 $ 196,765
Collateralized mortgage obligations    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 2 3
12 months or more in an unrealized loss position | security 137 139
Total | security 139 142
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 18 $ 24
12 months or more in an unrealized loss position 38,185 43,177
Total 38,203 43,201
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 1,337 5,107
12 months or more in an unrealized loss position 321,415 328,708
Total $ 322,752 $ 333,815
Asset-backed securities    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security   2
12 months or more in an unrealized loss position | security 7 13
Total | security 7 15
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position   $ 4
12 months or more in an unrealized loss position $ 1,644 1,977
Total 1,644 1,981
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position   1,068
12 months or more in an unrealized loss position 21,588 50,198
Total $ 21,588 $ 51,266
Collateralized loan obligations    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 7 4
12 months or more in an unrealized loss position | security   1
Total | security 7 5
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 51 $ 8
12 months or more in an unrealized loss position   1
Total 51 9
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 46,305 31,440
12 months or more in an unrealized loss position   227
Total $ 46,305 $ 31,667