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Loans - Amortized cost basis of loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Modifications [Line Items]
Amortized Cost	$ 96	$ 1,040	$ 450	$ 1,085
% of Total Class of Financing Receivable	0.00%	0.10%	0.00%	0.10%
Term Extension
Financing Receivable, Modifications [Line Items]
Amortized Cost	$ 96	$ 1,040	$ 432	$ 1,040
Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Amortized Cost			18	45
Commercial real estate | Term Extension
Financing Receivable, Modifications [Line Items]
Amortized Cost	$ 96	$ 969	$ 96	$ 969
% of Total Class of Financing Receivable	0.00%	0.20%	0.00%	0.20%
Commercial real estate | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Amortized Cost				$ 45
% of Total Class of Financing Receivable				0.00%
Residential mortgage | Term Extension
Financing Receivable, Modifications [Line Items]
Amortized Cost		$ 71	$ 336	$ 71
% of Total Class of Financing Receivable		0.00%	0.10%	0.00%
Residential mortgage | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Amortized Cost			$ 18
% of Total Class of Financing Receivable			0.00%

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- Definition

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