Investment Securities - Contractual Maturities of Securities Available-for-Sale (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	$ 0
Due after one year through five years	40,521
Due after five years through ten years	482,408
Due after ten years	2,003,715
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	2,526,644
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	40,287
Due after five years through ten years	450,897
Due after ten years	1,755,655
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	2,246,839
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	1,051,601
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	1,051,601
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	861,840
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	861,840
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	30,384
Due after five years through ten years	9,994
Due after ten years	12,232
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	52,610
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	30,312
Due after five years through ten years	9,979
Due after ten years	11,273
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	51,564
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	14,892
Due after ten years	452,427
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	467,319
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	14,899
Due after ten years	431,732
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	446,631
US States and Political Subdivisions Debt Securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	602
Due after five years through ten years	0
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	602
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	594
Due after five years through ten years	0
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	594
Corporate Debt Securities [Member]
Investment Securities, Available-for-Sale, Amortized Cost
Due in one year or less	0
Due after one year through five years	5,000
Due after five years through ten years	284,098
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	289,098
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	4,842
Due after five years through ten years	252,870
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	257,712
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	352,615
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	352,615
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	316,910
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	316,910
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	4,535
Due after five years through ten years	167,864
Due after ten years	106,577
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	278,976
Investment Securities, Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	4,539
Due after five years through ten years	167,973
Due after ten years	106,904
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	279,416
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	996
Due after ten years	12,589
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	13,585
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	976
Due after ten years	11,396
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	12,372
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	15,674
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	15,674
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	15,600
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	15,600
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	4,564
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	4,564
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	4,200
Due after ten years	0
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	$ 4,200