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Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Stock Based Compensation [Abstract]

Summary of Stock Option Activity

	2020								2019
			Weighted								Weighted
			Average			Average					Average			Average
			Exercise			Intrinsic					Exercise			Intrinsic
	Options		Price			Value			Options		Price			Value
Outstanding, beginning of year	199,825		$	24.78					208,700		$	22.54
Granted	33,750			26.93					26,750			36.02
Exercised	(15,530)			17.25					(32,350)			19.71
Forfeited	(2,075)			16.83					(3,275)			24.31
Outstanding, end of year	215,970		$	25.73		$	742,738		199,825		$	24.78		$	2,822,470
Exercisable, end of year	182,220		$	25.51		$	742,738		173,075		$	23.04		$	2,745,430

Schedule of Fair Value Assumptions

	Years Ended December 31,
	2020			2019
Dividend yield		3.55%			3.59%
Expected life		10 years			10 years
Expected volatility		34.15%			29.08%
Risk-free interest rate		0.91%			1.92%
Weighted average fair value of options granted	$	6.34		$	7.61

Schedule of Outstanding Stock Options

			Average							Average
	Options		Exercise			Remaining		Options		Exercise
	Outstanding		Price			Life, Years		Exercisable		Price
	18,000		$	16.65		1.0		18,000		$	16.65
	23,100			18.03		2.0		23,100			18.03
	1,650			18.36		2.0		1,650			18.36
	3,000			19.30		2.8		3,000			19.30
	20,125			17.93		3.0		20,125			17.93
	8,250			19.39		3.9		8,250			19.39
	9,375			19.03		4.9		9,375			19.03
	16,120			22.37		6.0		16,120			22.37
	29,500			32.81		7.0		29,500			32.81
	26,350			32.34		8.0		26,350			32.34
	26,750			36.02		9.0		26,750			36.02
	33,750			26.93		10.0		—			—
Total	215,970							182,220

Summary of Restricted Stock Activity

		2020				2019
				Weighted-Average				Weighted-Average
		Number of		Grant Date		Number of		Grant Date
		Shares		Fair Value		Shares		Fair Value
Non-vested, beginning of year		36,195		31.65		34,615		27.82
Granted		14,500		26.93		13,100		36.02
Vested		(11,560)		32.89		(11,520)		25.12
Forfeited		—		—		—		—
Non-vested at December 31		39,135		30.72		36,195		31.65

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding and exercisable options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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