Investment Securities - Contractual Maturities of Securities Available-for-Sale (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	$ 10,750
Due after one year through five years	88,053
Due after five years through ten years	315,825
Due after ten years	2,231,786
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	2,646,414
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	10,750
Due after one year through five years	87,434
Due after five years through ten years	300,498
Due after ten years	2,055,376
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	2,454,058
Residential Mortgage Backed Securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	972,161
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	972,161
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	834,085
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	834,085
Commercial Mortgage Backed Securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	40,168
Due after five years through ten years	0
Due after ten years	11,854
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	52,022
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	40,193
Due after five years through ten years	0
Due after ten years	10,773
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	50,966
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	13,691
Due after ten years	869,376
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	883,067
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	13,792
Due after ten years	857,832
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	871,624
Corporate Debt Securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	10,750
Due after one year through five years	47,677
Due after five years through ten years	198,809
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	257,236
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	10,750
Due after one year through five years	47,033
Due after five years through ten years	183,813
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	241,596
Private Label Collateralized Mortgage Obligations [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	254,787
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	254,787
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	228,975
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	228,975
Collateralized Loan Obligations [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	208
Due after five years through ten years	93,763
Due after ten years	106,548
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	200,519
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	208
Due after five years through ten years	93,793
Due after ten years	106,821
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	200,822
Mortgage-backed Securities, Issued by Private Enterprises
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	5,928
Due after ten years	3,818
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	9,746
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	5,638
Due after ten years	3,641
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	9,279
Asset-backed Securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	13,242
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	13,242
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	13,249
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	13,249
SBA asset-backed securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	3,634
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	3,634
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	3,462
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	$ 3,462