v3.26.1
Securities - Summary of Amortized Cost and Fair Values of Securities Available-for-sale (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost $ 1,743,352 $ 1,516,376
Available-for-sale Securities, Gross Unrealized Gains 3,866 10,224
Available-for-sale Securities, Gross Unrealized Losses (129,005) (121,592)
Available for sale, Basis adjustments [1] (1,465) 98
Available-for-sale Securities, Fair Value 1,616,748 1,405,106
U.S. Treasury Notes    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 29,747 29,655
Available-for-sale Securities, Gross Unrealized Gains 35 268
Available-for-sale Securities, Gross Unrealized Losses (44) (33)
Available for sale, Basis adjustments [1] 0 0
Available-for-sale Securities, Fair Value 29,738 29,890
U.S. Government Agencies    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 116,025 118,674
Available-for-sale Securities, Gross Unrealized Gains 1 32
Available-for-sale Securities, Gross Unrealized Losses (9,425) (8,959)
Available for sale, Basis adjustments [1] 0 0
Available-for-sale Securities, Fair Value 106,601 109,747
Obligations of States, Municipalities, and Political Subdivisions    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 37,292 56,705
Available-for-sale Securities, Gross Unrealized Gains 59 309
Available-for-sale Securities, Gross Unrealized Losses (2,338) (2,470)
Available for sale, Basis adjustments [1] (92) 10
Available-for-sale Securities, Fair Value 34,921 54,554
Agency, Residential Mortgage-Backed Securities    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 956,867 881,735
Available-for-sale Securities, Gross Unrealized Gains 3,366 8,407
Available-for-sale Securities, Gross Unrealized Losses (69,225) (64,874)
Available for sale, Basis adjustments [1] (424) 30
Available-for-sale Securities, Fair Value 890,584 825,298
Non-Agency, Residential Mortgage-Backed Securities    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 149,271 143,372
Available-for-sale Securities, Gross Unrealized Gains 40 419
Available-for-sale Securities, Gross Unrealized Losses (16,570) (16,083)
Available for sale, Basis adjustments [1] (378) 23
Available-for-sale Securities, Fair Value 132,363 127,731
Agency, Commercial Mortgage-Backed Securities    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 370,382 243,762
Available-for-sale Securities, Gross Unrealized Gains 365 752
Available-for-sale Securities, Gross Unrealized Losses (29,894) (27,518)
Available for sale, Basis adjustments [1] (530) 33
Available-for-sale Securities, Fair Value 340,323 217,029
Corporate Securities    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 20,791 30,318
Available-for-sale Securities, Gross Unrealized Gains 0 1
Available-for-sale Securities, Gross Unrealized Losses (588) (887)
Available for sale, Basis adjustments [1] (21) 1
Available-for-sale Securities, Fair Value 20,182 29,433
Asset-Backed Securities    
Schedule Of Available For Sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost 62,977 12,155
Available-for-sale Securities, Gross Unrealized Gains 0 36
Available-for-sale Securities, Gross Unrealized Losses (921) (768)
Available for sale, Basis adjustments [1] (20) 1
Available-for-sale Securities, Fair Value $ 62,036 $ 11,424
[1] Basis adjustments represent the amount of fair value hedging adjustments included in the carrying amounts of fixed-rate investment securities designated in fair value hedging arrangements. Refer to Note 16—Derivative Instruments and Hedge Activities for additional discussion.