Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
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	747,408	$ 638,640
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	617,741	627,398
Amortized Cost
Due in less than one year	1,990
Due after one year through five years	17,509
Due after five years through ten years	3,123
Due after ten years	20,541
Available for sale loans with maturity date, amortized cost, total	43,163
Available for sale, amortized cost, total	2,119,303	1,653,658
Fair Value
Due in less than one year	2,087
Due after one year through five years	17,419
Due after five years through ten years	3,030
Due after ten years	18,852
Available for sale loans with maturity date, fair value, total	41,388
Securities available-for-sale (at fair value)	1,871,742	1,644,319
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	747,408
Held to maturity, amortized cost, total	747,408	638,640
Fair Value
Loans without single maturity date	617,741
Held to maturity, fair value		627,398
Amortized Cost
Loans without single maturity date	1,561,197
Available for sale, amortized cost, total		1,234,721
Fair Value
Loans without single maturity date	1,338,653
Securities available-for-sale (at fair value)		1,222,720
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	179,148
Available for sale, amortized cost, total		88,096
Fair Value
Loans without single maturity date	166,387
Securities available-for-sale (at fair value)		88,767
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	313,155
Available for sale, amortized cost, total	313,155	292,751
Fair Value
Loans without single maturity date	302,904
Securities available-for-sale (at fair value)	302,904	$ 292,690
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	22,640
Available for sale, amortized cost, total	22,640
Fair Value
Loans without single maturity date	22,410
Securities available-for-sale (at fair value)	$ 22,410