Employee Benefits (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) fund	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Schedule Of Employee Benefits [Line Items]
Number of investment funds | fund			9
Number of equity funds | fund			6
Number of fixed income funds | fund			3
Employer contribution			$ 0	$ 0
Percentage of internal revenue contribution			25.00%
Percentage of internal revenue service limitations			6.00%
Employer contribution in defined contribution plan			$ 803	823
Accrued expenses and other liabilities	$ 28,825		28,825		$ 26,521
Non-interest expense	9,081	$ 8,815	26,905	27,307
Group Term Replacement Plan
Schedule Of Employee Benefits [Line Items]
Liability related to these postretirement benefits	1,681		1,681		1,642
Postemployment benefit expense			39	39
Other Director and Officer Postretirement Benefits
Schedule Of Employee Benefits [Line Items]
Non-interest expense			62	45
Liability related to these postretirement benefits	2,099		2,099		2,068
Officers | Executive Plan
Schedule Of Employee Benefits [Line Items]
Accrued expenses and other liabilities	2,020		2,020		1,962
Non-interest expense			195	259
Directors' Plan | Directors
Schedule Of Employee Benefits [Line Items]
Accrued expenses and other liabilities	$ 3,762		3,762		$ 3,278
Non-interest expense			$ 191	$ 155
Minimum | Other Director and Officer Postretirement Benefits
Schedule Of Employee Benefits [Line Items]
Post retirement benefit period			15 years
Minimum | Officers | Executive Plan
Schedule Of Employee Benefits [Line Items]
Terms of services			1 year
Maximum | Other Director and Officer Postretirement Benefits
Schedule Of Employee Benefits [Line Items]
Post retirement benefit period			20 years
Maximum | Officers | Executive Plan
Schedule Of Employee Benefits [Line Items]
Terms of services			5 years