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Investment Securities - Summary of Held-to-maturity Securities with Unrealized Loss (Details)
$ in Thousands
Mar. 31, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 months, fair value $ 328,674 $ 277,526
Less than 12 months, unrealized loss $ 2,162 $ 6,697
Less than 12 months, no. of securities | security 39 62
12 months or more, fair value $ 351,756 $ 346,649
12 months or more, unrealized loss $ 69,731 $ 76,214
12 months or more, no. of securities | security 151 149
Total fair value $ 680,430 $ 624,175
Total unrealized loss 71,893 82,911
U.S. government sponsored agencies    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 months, fair value 178,241 150,390
Less than 12 months, unrealized loss $ 947 $ 2,464
Less than 12 months, no. of securities | security 20 29
12 months or more, fair value $ 37,136 $ 38,901
12 months or more, unrealized loss $ 6,906 $ 7,763
12 months or more, no. of securities | security 10 11
Total fair value $ 215,377 $ 189,291
Total unrealized loss 7,853 10,227
States and political subdivisions    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 months, fair value 1,228 957
Less than 12 months, unrealized loss $ 76 $ 44
Less than 12 months, no. of securities | security 1 1
12 months or more, fair value $ 108,357 $ 106,716
12 months or more, unrealized loss $ 29,854 $ 31,672
12 months or more, no. of securities | security 66 66
Total fair value $ 109,585 $ 107,673
Total unrealized loss 29,930 31,716
Residential mortgage-backed securities    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 months, fair value 140,441 116,576
Less than 12 months, unrealized loss $ 1,030 $ 2,808
Less than 12 months, no. of securities | security 16 27
12 months or more, fair value $ 131,355 $ 130,556
12 months or more, unrealized loss $ 18,282 $ 21,485
12 months or more, no. of securities | security 43 43
Total fair value $ 271,796 $ 247,132
Total unrealized loss 19,312 24,293
Commercial mortgage-backed securities    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 months, fair value 8,764 9,603
Less than 12 months, unrealized loss $ 109 $ 1,381
Less than 12 months, no. of securities | security 2 5
12 months or more, fair value $ 74,908 $ 70,476
12 months or more, unrealized loss $ 14,689 $ 15,294
12 months or more, no. of securities | security 32 29
Total fair value $ 83,672 $ 80,079
Total unrealized loss $ 14,798 $ 16,675