Loans and Allowance for Credit Losses - Loan Modifications not Classified as TDRs (Details) $ in Thousands	Sep. 30, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Portfolio loans	$ 2,044	$ 5,100
COVID-19 Loan Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
Portfolio loans		$ 999
Number of modifications | loan	0	1
Interest Only | COVID-19 Loan Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
Portfolio loans		$ 999
Number of modifications | loan		1
Full Payment Deferral | COVID-19 Loan Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
Portfolio loans		$ 0
Number of modifications | loan		0