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Investment Securities - Schedule of Continuous Unrealized Loss on AFS and HTM Securities (Details)
$ in Thousands
Mar. 31, 2026
USD ($)
security
Dec. 31, 2025
USD ($)
security
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 205 203
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 46,440 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses (123) 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 874,550 931,564
Investment securities available-for-sale, 12 months or greater, unrealized losses (78,392) (78,645)
Investment securities available-for-sale, Estimated fair value 920,990 931,564
Investment securities available-for-sale, Unrealized losses $ (78,515) $ (78,645)
Investment securities held-to-maturity, Number of securities | security 211 212
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 14,071 $ 6,193
Investment securities held-to-maturity, Less than 12 months, unrealized losses (560) (521)
Investment securities held-to-maturity, 12 months or greater, estimated fair value 735,184 762,849
Investment securities held-to-maturity, 12 months or greater, unrealized losses (84,502) (80,350)
Investment securities held-to-maturity, Estimated Fair Value 749,255 769,042
Investment securities held-to-maturity, Unrealized losses $ (85,062) $ (80,871)
U.S. agency securities    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 50 52
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 0 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses 0 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 315,063 337,708
Investment securities available-for-sale, 12 months or greater, unrealized losses (17,318) (17,541)
Investment securities available-for-sale, Estimated fair value 315,063 337,708
Investment securities available-for-sale, Unrealized losses $ (17,318) $ (17,541)
Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 141 139
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 17,423 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses (92) 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 512,563 546,514
Investment securities available-for-sale, 12 months or greater, unrealized losses (58,085) (58,188)
Investment securities available-for-sale, Estimated fair value 529,986 546,514
Investment securities available-for-sale, Unrealized losses $ (58,177) $ (58,188)
Investment securities held-to-maturity, Number of securities | security 135 136
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 0 $ 0
Investment securities held-to-maturity, Less than 12 months, unrealized losses 0 0
Investment securities held-to-maturity, 12 months or greater, estimated fair value 469,253 485,567
Investment securities held-to-maturity, 12 months or greater, unrealized losses (62,117) (58,836)
Investment securities held-to-maturity, Estimated Fair Value 469,253 485,567
Investment securities held-to-maturity, Unrealized losses $ (62,117) $ (58,836)
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 12 10
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 29,017 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses (31) 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 37,099 37,329
Investment securities available-for-sale, 12 months or greater, unrealized losses (2,434) (2,503)
Investment securities available-for-sale, Estimated fair value 66,116 37,329
Investment securities available-for-sale, Unrealized losses $ (2,465) $ (2,503)
Investment securities held-to-maturity, Number of securities | security 16 16
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 4,230 $ 4,271
Investment securities held-to-maturity, Less than 12 months, unrealized losses (531) (503)
Investment securities held-to-maturity, 12 months or greater, estimated fair value 70,953 71,702
Investment securities held-to-maturity, 12 months or greater, unrealized losses (9,475) (9,284)
Investment securities held-to-maturity, Estimated Fair Value 75,183 75,973
Investment securities held-to-maturity, Unrealized losses $ (10,006) $ (9,787)
Municipal bonds    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 1 1
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 0 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses 0 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 7,872 8,046
Investment securities available-for-sale, 12 months or greater, unrealized losses (508) (380)
Investment securities available-for-sale, Estimated fair value 7,872 8,046
Investment securities available-for-sale, Unrealized losses $ (508) $ (380)
Investment securities held-to-maturity, Number of securities | security 33 33
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 0 $ 0
Investment securities held-to-maturity, Less than 12 months, unrealized losses 0 0
Investment securities held-to-maturity, 12 months or greater, estimated fair value 97,592 98,942
Investment securities held-to-maturity, 12 months or greater, unrealized losses (8,221) (6,933)
Investment securities held-to-maturity, Estimated Fair Value 97,592 98,942
Investment securities held-to-maturity, Unrealized losses $ (8,221) $ (6,933)
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 1 1
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 0 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses 0 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 1,953 1,967
Investment securities available-for-sale, 12 months or greater, unrealized losses (47) (33)
Investment securities available-for-sale, Estimated fair value 1,953 1,967
Investment securities available-for-sale, Unrealized losses $ (47) $ (33)
Investment securities held-to-maturity, Number of securities | security 27 27
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 9,841 $ 1,922
Investment securities held-to-maturity, Less than 12 months, unrealized losses (29) (18)
Investment securities held-to-maturity, 12 months or greater, estimated fair value 97,386 106,638
Investment securities held-to-maturity, 12 months or greater, unrealized losses (4,689) (5,297)
Investment securities held-to-maturity, Estimated Fair Value 107,227 108,560
Investment securities held-to-maturity, Unrealized losses $ (4,718) $ (5,315)