Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	$ 158,000	$ 128,000
Weighted average exercise price	$ 17.78	$ 17.78	$ 17.76
Employer's safe harbor contribution rate	3.00%
Employer's safe harbor contribution payable	$ 252,000
Prior year contribution payable credited in current year		$ 249,000
Defined contribution plan, cost recognized	250,000	247,000
Employer's matching contribution	222,000	214,000
Deferred compensation liability	1,568,000	1,584,000
Deferred compensation, compensation expense	13,000	20,000
Salary continuation liability	1,146,000	1,194,000
Salary continuation period expense	85,000	94,000
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Present value of future plan liability	112,000	135,000
Supplemental retirement plans, cost recognized during period	$ 11,000	$ 11,000
Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Shares authorized under share-based payment awards	300,000
Shares available for grant	162,051
Restricted Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of shares awarded	8,839	9,530
Award vesting period	3 years
Unrecognized compensation cost related to non-vested awards	$ 162,000
Employee Stock Purchase Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Shares authorized under share-based payment awards	250,000
Stock options awarded	0
Award expiration period	10 years
Award expiration date	Feb. 17, 2025
Number of share per year in addition to prior unissued shares	5,000
Shares issued during period under employee stock purchase plans	4,944	4,459
Shares reserved for future issuance	161,676
Employee Stock Purchase Plan [Member] | Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Exercise price, lower range limit	$ 17.65
Exercise price, upper range limit	18.00
Weighted average exercise price	$ 17.78
Weighted average remaining contractual life	2 years 18 days
Stock Options compensation costs not yet recognized	$ 0
Shares issued during period under employee stock purchase plans	0	0
Maximum [Member] | Employee Stock Purchase Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Option price as a percentage of fair value	100.00%
Minimum [Member] | Employee Stock Purchase Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Option price as a percentage of fair value	95.00%