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Investment Securities - Summary of Available-for-sale Securities with Unrealized Loss (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
security
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value $ 257,325 $ 107,930
Less than 12 months, unrealized loss $ 9,578 $ 1,532
Less than 12 months, Number of securities | security 168 132
12 months or more, fair value $ 768,333 $ 831,720
12 months or more, unrealized loss $ 137,832 $ 137,674
12 months or more, Number of securities | security 444 420
Total fair value $ 1,025,658 $ 939,650
Total unrealized loss 147,410 139,206
U.S. Treasury and government agencies    
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value 10,003 8,568
Less than 12 months, unrealized loss $ 174 $ 83
Less than 12 months, Number of securities | security 11 22
12 months or more, fair value $ 2,299 $ 11,631
12 months or more, unrealized loss $ 34 $ 912
12 months or more, Number of securities | security 10 5
Total fair value $ 12,302 $ 20,199
Total unrealized loss 208 995
U.S. government sponsored agencies    
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value 130,518 14,439
Less than 12 months, unrealized loss $ 5,816 $ 35
Less than 12 months, Number of securities | security 27 4
12 months or more, fair value $ 70,982 $ 74,211
12 months or more, unrealized loss $ 9,321 $ 10,497
12 months or more, Number of securities | security 13 15
Total fair value $ 201,500 $ 88,650
Total unrealized loss 15,137 10,532
States and political subdivisions    
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value 28,400 18,268
Less than 12 months, unrealized loss $ 1,188 $ 136
Less than 12 months, Number of securities | security 55 32
12 months or more, fair value $ 160,210 $ 167,346
12 months or more, unrealized loss $ 27,601 $ 26,959
12 months or more, Number of securities | security 138 138
Total fair value $ 188,610 $ 185,614
Total unrealized loss 28,789 27,095
Residential mortgage-backed securities    
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value 85,043 58,671
Less than 12 months, unrealized loss $ 2,300 $ 1,150
Less than 12 months, Number of securities | security 69 66
12 months or more, fair value $ 482,609 $ 529,895
12 months or more, unrealized loss $ 91,175 $ 89,517
12 months or more, Number of securities | security 256 238
Total fair value $ 567,652 $ 588,566
Total unrealized loss 93,475 90,667
Commercial mortgage-backed securities    
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value 2,868 6,000
Less than 12 months, unrealized loss $ 93 $ 112
Less than 12 months, Number of securities | security 5 7
12 months or more, fair value $ 46,619 $ 44,656
12 months or more, unrealized loss $ 9,316 $ 9,270
12 months or more, Number of securities | security 24 21
Total fair value $ 49,487 $ 50,656
Total unrealized loss 9,409 9,382
Bank-issued trust preferred securities    
Available-for-sale securities that had an unrealized loss:    
Less than 12 months, fair value 493 1,984
Less than 12 months, unrealized loss $ 7 $ 16
Less than 12 months, Number of securities | security 1 1
12 months or more, fair value $ 5,614 $ 3,981
12 months or more, unrealized loss $ 385 $ 519
12 months or more, Number of securities | security 3 3
Total fair value $ 6,107 $ 5,965
Total unrealized loss $ 392 $ 535