Securities - Schedule of Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Amortized Cost
Due in less than one year	$ 0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	0
Held to maturity loans with maturity date, amortized cost	0
HTM, amortized cost	576,155	$ 586,178
Fair Value
Due in less than one year	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	0
Held to maturity loans with maturity date, fair value	0
HTM, fair value	477,706	489,560
Amortized Cost
Due in less than one year	6,244
Due after one year through five years	4,087
Due after five years through ten years	50,324
Due after ten years	336,677
Available for sale loans with maturity date, amortized cost	397,332
AFS, amortized cost	5,173,458	5,266,294
Fair Value
Due in less than one year	6,269
Due after one year through five years	4,043
Due after five years through ten years	49,032
Due after ten years	331,577
Available for sale loans with maturity date, fair value, total	390,921
Available for sale, fair value	5,069,260	5,164,567
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	489,268
HTM, amortized cost	489,268	498,931
Fair Value
Loans without single maturity date	396,801
HTM, fair value	396,801	408,235
Amortized Cost
Loans without single maturity date	3,678,595
AFS, amortized cost	3,678,595	3,681,499
Fair Value
Loans without single maturity date	3,590,628
Available for sale, fair value	3,590,628	3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	86,887
HTM, amortized cost	86,887	87,247
Fair Value
Loans without single maturity date	80,905
HTM, fair value	80,905	81,325
Amortized Cost
Loans without single maturity date	358,829
AFS, amortized cost	358,829	395,165
Fair Value
Loans without single maturity date	357,447
Available for sale, fair value	357,447	393,873
Private mortgage-backed securities and collateralized mortgage obligations
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	91,193
AFS, amortized cost	91,193	131,846
Fair Value
Loans without single maturity date	86,450
Available for sale, fair value	86,450	127,397
CLOs
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	426,034
AFS, amortized cost	426,034	423,864
Fair Value
Loans without single maturity date	424,181
Available for sale, fair value	424,181	423,988
Other debt securities
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	221,475
AFS, amortized cost	221,475	242,672
Fair Value
Loans without single maturity date	219,633
Available for sale, fair value	$ 219,633	$ 242,517