Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
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	658,055	$ 680,313
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	527,327	558,359
Amortized Cost
Due in less than one year	1,175
Due after one year through five years	5,916
Due after five years through ten years	29,891
Due after ten years	22,415
Available for sale loans with maturity date, amortized cost, total	59,397
Available for sale, amortized cost, total	2,191,952	2,049,302
Fair Value
Due in less than one year	1,172
Due after one year through five years	5,879
Due after five years through ten years	29,763
Due after ten years	20,779
Available for sale loans with maturity date, fair value, total	57,593
Available for sale, fair value, total	1,967,204	1,836,020
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	568,957
Held to maturity, amortized cost, total	568,957	590,676
Fair Value
Loans without single maturity date	449,074
Held to maturity, fair value, total	449,074	478,930
Amortized Cost
Loans without single maturity date	1,410,486
Available for sale, amortized cost, total	1,410,486	1,152,753
Fair Value
Loans without single maturity date	1,213,930
Available for sale, fair value, total	1,213,930	969,381
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	89,098
Held to maturity, amortized cost, total	89,098	89,637
Fair Value
Loans without single maturity date	78,253
Held to maturity, fair value, total	78,253	79,429
Amortized Cost
Loans without single maturity date	315,649
Available for sale, amortized cost, total	315,649	385,013
Fair Value
Loans without single maturity date	299,164
Available for sale, fair value, total	299,164	368,272
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	131,251
Available for sale, amortized cost, total	131,251	135,878
Fair Value
Loans without single maturity date	120,678
Available for sale, fair value, total	120,678	125,003
Collateralized loan obligations
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	267,780
Available for sale, amortized cost, total	267,780	300,855
Fair Value
Loans without single maturity date	268,360
Available for sale, fair value, total	268,360	299,455
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	7,389
Available for sale, amortized cost, total	7,389	26,599
Fair Value
Loans without single maturity date	7,479
Available for sale, fair value, total	$ 7,479	$ 27,074