Employee Benefits (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) fund	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Schedule Of Employee Benefits [Line Items]
Number of investment funds | fund	10
Number of equity funds | fund	7
Number of fixed income funds | fund	3
Percentage of internal revenue contribution	25.00%
Percentage of internal revenue service limitations	6.00%
Employer contribution in defined contribution plan	$ 294	$ 255
Accrued expenses and other liabilities	22,731		$ 20,872
Non-interest expense	9,105	7,953
Postretirement Life Insurance [Member]
Schedule Of Employee Benefits [Line Items]
Liability related to these postretirement benefits	1,435		1,423
Postemployment benefit expense	12	11
Postemployment Retirement Benefits [Member]
Schedule Of Employee Benefits [Line Items]
Non-interest expense	19	18
Liability related to these postretirement benefits	1,994		1,986
Officer [Member] | Deferred Compensation, Share-based Payments [Member]
Schedule Of Employee Benefits [Line Items]
Accrued expenses and other liabilities	1,576		1,545
Non-interest expense	197	69
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member] | Director [Member]
Schedule Of Employee Benefits [Line Items]
Accrued expenses and other liabilities	2,793		$ 2,877
Non-interest expense	$ 56	$ 46
Minimum | Postemployment Retirement Benefits [Member]
Schedule Of Employee Benefits [Line Items]
Post retirement benefit period	15 years
Minimum | Officer [Member] | Deferred Compensation, Share-based Payments [Member]
Schedule Of Employee Benefits [Line Items]
Terms of services	1 year
Maximum | Postemployment Retirement Benefits [Member]
Schedule Of Employee Benefits [Line Items]
Post retirement benefit period	20 years
Maximum | Officer [Member] | Deferred Compensation, Share-based Payments [Member]
Schedule Of Employee Benefits [Line Items]
Terms of services	5 years