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Securities - Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized Cost
Due within 1 year	$ 14,995
Due after 1 year through 5 years	61,708
Due after 5 years through 10 years	146,294
Due after 10 years	347,212
Total available-for-sale	570,209	$ 598,073
Estimated Fair Value
Due within 1 year	14,726
Due after 1 year through 5 years	55,491
Due after 5 years through 10 years	127,028
Due after 10 years	298,747
Total available-for-sale	495,992	536,973
Amortized Cost
Due after 1 year through 5 years	1,026
Due after 5 years through 10 years	757
Due after 10 years	35,627
Total held-to-maturity	37,410	38,901
Estimated Fair Value
Due after 1 year through 5 years	983
Due after 5 years through 10 years	711
Due after 10 years	29,098
Total held-to-maturity	$ 30,792	$ 33,218

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