Allowance for Credit Losses - Loans (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period	$ 77,163,000	$ 70,264,000	$ 70,264,000
Charge-offs	(617,000)	(139,000)	(769,000)
Recoveries	38,000	65,000
Net charge-offs	(579,000)	(74,000)
Provision for credit loss - loans	239,000	1,213,000
Balance at end of the period	76,823,000	71,403,000	$ 77,163,000
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs	$ (617,000)	$ (139,000)