Stock-Based Compensation (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Stock-Based Compensation [Abstract]
Options, beginning of year	215,970	199,825
Options, Granted	43,500	33,750
Options, Exercised	(22,420)	(15,530)
Options, Forfeited	(10,975)	(2,075)
Options, end of year	226,075	215,970
Options, Exercisable, end of period	182,575	182,220
Weighted Average Exercise Price Per Share, Outstanding, beginning of period	$ 25.73	$ 24.78
Weighted Average Exercise Price Per Share, Granted	25.80	26.93
Weighted Average Exercise Price Per Share, Exercised	17.59	17.25
Weighted Average Exercise Price Per Share, Forfeited	29.48	16.83
Weighted Average Exercise Price Per Share, Outstanding, end of period	26.37	25.73
Weighted Average Exercise Price Per Share, Exercisable, end of period	$ 26.50	$ 25.51
Weighted Average Remaining Contractual Term, Outstanding	6 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding, beginning of period	$ 742,738
Aggregate Intrinsic Value, Outstanding, end of period	520	$ 742,738
Aggregate Intrinsic Value, Exercisable at end of period	$ 511	$ 742,738