Securities - Schedule of Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Available for Sale, Amortized Cost
Within 1 year	$ 16,921
After 1 year through 5 years	122,913
After 5 years through 10 years	225,507
After 10 years	781,962
Amortized Cost	1,147,303	$ 1,169,578
Available for Sale, Estimated Fair Value
Within 1 year	16,914
After 1 year through 5 years	116,151
After 5 years through 10 years	196,185
After 10 years	698,426
Estimated Fair Value	1,027,676	1,057,621
Held to Maturity, Amortized Cost
Within 1 year	0
After 1 year through 5 years	6,562
After 5 years through 10 years	12,916
After 10 years	214,891
Amortized Cost	234,369	242,101
Held to Maturity, Estimated Fair Value
Within 1 year	0
After 1 year through 5 years	3,806
After 5 years through 10 years	12,206
After 10 years	193,534
Estimated Fair Value	$ 209,546	$ 217,609