Loans Receivable and Allowance for Credit Losses - Maui Wildfire (Details)	Dec. 31, 2023 USD ($)	Aug. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable
Total Loans	$ 1,308,552,000		$ 1,296,796,000
Residential real estate | Not impacted by Maui wildfires
Accounts, Notes, Loans and Financing Receivable
Total Loans	18,700,000
Residential real estate | Impacted by Maui wildfires
Accounts, Notes, Loans and Financing Receivable
Number of homes | item		12
Loan paid off	300,000
Total Loans	2,800,000	$ 3,200,000
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable
Total Loans			1,257,993,000
Home Equity Loans and Lines of Credit
Accounts, Notes, Loans and Financing Receivable
Total Loans			6,427,000
Consumer and other
Accounts, Notes, Loans and Financing Receivable
Total Loans			8,595,000
Unallocated
Accounts, Notes, Loans and Financing Receivable
Total Loans			$ 6,000
Forbearance Program | Residential real estate | Impacted by Maui wildfires
Accounts, Notes, Loans and Financing Receivable
Total Loans	$ 61,000