Loans Receivable and Allowance for Credit Losses - Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modified in period, amount	$ 2,557	$ 2,557
% of Total Class of Loans Receivable	0.70%	0.70%
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modified in period, amount	$ 2,557	$ 2,557
Real estate loans | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modified in period, amount	$ 2,317	$ 2,317
% of Total Class of Loans Receivable	0.60%	0.60%
Financing receivable, term extension	12 months	12 months
Real estate loans | Construction | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modified in period, amount	$ 2,317	$ 2,317
Commercial business loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modified in period, amount	$ 240	$ 240
% of Total Class of Loans Receivable	0.00%	0.00%
Financing receivable, term extension	12 months	12 months
Commercial business loans | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modified in period, amount	$ 240	$ 240