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Investment Securities - Schedule of Continuous Unrealized Loss on AFS and HTM Securities (Details)
$ in Thousands
Jun. 30, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 225 235
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 34,061 $ 9,830
Investment securities available-for-sale, Less than 12 months, unrealized losses (155) (136)
Investment securities available-for-sale, 12 months or greater, estimated fair value 1,132,027 1,256,180
Investment securities available-for-sale, 12 months or greater, unrealized losses (100,587) (141,409)
Investment securities available-for-sale, Estimated fair value 1,166,088 1,266,010
Investment securities available-for-sale, Unrealized losses $ (100,742) $ (141,545)
Investment securities held-to-maturity, Number of securities | security 214 222
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 1,942 $ 5,954
Investment securities held-to-maturity, Less than 12 months, unrealized losses (62) (152)
Investment securities held-to-maturity, 12 months or greater, estimated fair value 783,443 804,394
Investment securities held-to-maturity, 12 months or greater, unrealized losses (98,893) (119,419)
Investment securities held-to-maturity, Estimated Fair Value 785,385 810,348
Investment securities held-to-maturity, Unrealized losses $ (98,955) $ (119,571)
U.S. treasury bonds    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security   1
Investment securities available-for-sale, Less than 12 months, estimated fair value   $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses   0
Investment securities available-for-sale, 12 months or greater, estimated fair value   24,776
Investment securities available-for-sale, 12 months or greater, unrealized losses   (212)
Investment securities available-for-sale, Estimated fair value   24,776
Investment securities available-for-sale, Unrealized losses   $ (212)
U.S. agency securities    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 64 71
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 0 $ 2,300
Investment securities available-for-sale, Less than 12 months, unrealized losses 0 (8)
Investment securities available-for-sale, 12 months or greater, estimated fair value 488,768 556,235
Investment securities available-for-sale, 12 months or greater, unrealized losses (26,233) (41,734)
Investment securities available-for-sale, Estimated fair value 488,768 558,535
Investment securities available-for-sale, Unrealized losses $ (26,233) $ (41,742)
Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 146 148
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 6,004 $ 7,530
Investment securities available-for-sale, Less than 12 months, unrealized losses (15) (128)
Investment securities available-for-sale, 12 months or greater, estimated fair value 589,751 616,392
Investment securities available-for-sale, 12 months or greater, unrealized losses (70,367) (94,407)
Investment securities available-for-sale, Estimated fair value 595,755 623,922
Investment securities available-for-sale, Unrealized losses $ (70,382) $ (94,535)
Investment securities held-to-maturity, Number of securities | security 137 140
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 504,949 519,963
Investment securities held-to-maturity, 12 months or greater, unrealized losses (70,717) (85,941)
Investment securities held-to-maturity, Estimated Fair Value 504,949 519,963
Investment securities held-to-maturity, Unrealized losses $ (70,717) $ (85,941)
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Investment securities available-for-sale, Number of securities | security 13 13
Investment securities available-for-sale, Less than 12 months, estimated fair value $ 28,057 $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses (140) 0
Investment securities available-for-sale, 12 months or greater, estimated fair value 43,806 48,945
Investment securities available-for-sale, 12 months or greater, unrealized losses (3,172) (4,303)
Investment securities available-for-sale, Estimated fair value 71,863 48,945
Investment securities available-for-sale, Unrealized losses $ (3,312) $ (4,303)
Investment securities held-to-maturity, Number of securities | security 15 16
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 71,844 75,506
Investment securities held-to-maturity, 12 months or greater, unrealized losses (10,382) (13,069)
Investment securities held-to-maturity, Estimated Fair Value 71,844 75,506
Investment securities held-to-maturity, Unrealized losses $ (10,382) $ (13,069)
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 7,845 8,014
Investment securities available-for-sale, 12 months or greater, unrealized losses (672) (593)
Investment securities available-for-sale, Estimated fair value 7,845 8,014
Investment securities available-for-sale, Unrealized losses $ (672) $ (593)
Investment securities held-to-maturity, Number of securities | security 33 36
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 0 $ 4,026
Investment securities held-to-maturity, Less than 12 months, unrealized losses 0 (75)
Investment securities held-to-maturity, 12 months or greater, estimated fair value 95,466 98,645
Investment securities held-to-maturity, 12 months or greater, unrealized losses (10,529) (11,314)
Investment securities held-to-maturity, Estimated Fair Value 95,466 102,671
Investment securities held-to-maturity, Unrealized losses $ (10,529) $ (11,389)
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 1,857 1,818
Investment securities available-for-sale, 12 months or greater, unrealized losses (143) (160)
Investment securities available-for-sale, Estimated fair value 1,857 1,818
Investment securities available-for-sale, Unrealized losses $ (143) $ (160)
Investment securities held-to-maturity, Number of securities | security 29 30
Investment securities held-to-maturity, Less than 12 months, estimated fair value $ 1,942 $ 1,928
Investment securities held-to-maturity, Less than 12 months, unrealized losses (62) (77)
Investment securities held-to-maturity, 12 months or greater, estimated fair value 111,184 110,280
Investment securities held-to-maturity, 12 months or greater, unrealized losses (7,265) (9,095)
Investment securities held-to-maturity, Estimated Fair Value 113,126 112,208
Investment securities held-to-maturity, Unrealized losses $ (7,327) $ (9,172)