Securities - Schedule of Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 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, total	0
Held to maturity, amortized cost, total	564,067	$ 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, total	0
Held to maturity, fair value, total	465,718	489,560
Amortized Cost
Due in less than one year	6,280
Due after one year through five years	3,599
Due after five years through ten years	50,338
Due after ten years	335,602
Available for sale loans with maturity date, amortized cost, total	395,819
Available for sale, amortized cost, total	5,286,332	5,266,294
Fair Value
Due in less than one year	6,285
Due after one year through five years	3,550
Due after five years through ten years	49,125
Due after ten years	336,460
Available for sale loans with maturity date, fair value, total	395,420
Available for sale, fair value, total	5,174,602	5,164,567
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	477,449
Held to maturity, amortized cost, total	477,449	498,931
Fair Value
Loans without single maturity date	385,364
Held to maturity, fair value, total	385,364	408,235
Amortized Cost
Loans without single maturity date	3,779,175
Available for sale, amortized cost, total	3,779,175	3,681,499
Fair Value
Loans without single maturity date	3,677,023
Available for sale, fair value, total	3,677,023	3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	86,618
Held to maturity, amortized cost, total	86,618	87,247
Fair Value
Loans without single maturity date	80,354
Held to maturity, fair value, total	80,354	81,325
Amortized Cost
Loans without single maturity date	361,779
Available for sale, amortized cost, total	361,779	395,165
Fair Value
Loans without single maturity date	359,428
Available for sale, fair value, total	359,428	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	85,347
Available for sale, amortized cost, total	85,347	131,846
Fair Value
Loans without single maturity date	80,487
Available for sale, fair value, total	80,487	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	419,898
Available for sale, amortized cost, total	419,898	423,864
Fair Value
Loans without single maturity date	419,555
Available for sale, fair value, total	419,555	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	244,314
Available for sale, amortized cost, total	244,314	242,672
Fair Value
Loans without single maturity date	242,689
Available for sale, fair value, total	$ 242,689	$ 242,517