Stock-Based Compensation (Summary of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares
Stock-Based Compensation [Abstract]
Options, beginning of year | shares	199,825
Options, Granted | shares	0
Options, Exercised | shares	(4,681)
Options, end of year | shares	195,144	199,825
Options, Exercisable, end of period | shares	168,394
Weighted Average Exercise Price Per Share, Outstanding, beginning of period | $ / shares	$ 24.78
Weighted Average Exercise Price Per Share, Granted | $ / shares
Weighted Average Exercise Price Per Share, Exercised | $ / shares	17.87
Weighted Average Exercise Price Per Share, Outstanding, end of period | $ / shares	24.94	$ 24.78
Weighted Average Exercise Price Per Share, Exercisable, end of period | $ / shares	$ 23.18
Weighted Average Remaining Contractual Term, Granted in Period	2 years 7 months 6 days
Weighted Average Remaining Contractual Term, Outstanding	5 years 2 months 12 days	5 years 10 months 24 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period	4 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding, beginning of period | $	$ 2,823
Aggregate Intrinsic Value, Granted in Period | $	0
Aggregate Intrinsic Value, Outstanding, end of period | $	654	$ 2,823
Aggregate Intrinsic Value, Exercisable at end of period | $	$ 654