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Stock Options (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Black-Scholes-Merton option valuation model assumptions

​

​	​	​	​	​	​
​		2021		2020
Expected Life (Years)		7.00	​	7.00	​
Dividend yield		3.18	%	6.04	%
Interest rate		1.02	%	0.74	%
Volatility		37.84	%	29.04	%
​	​	​	​	​	​
​			​	​	​

Summary of option activity under stock option plans

​

​	​	​	​	​	​	​	​	​	​	​	​
​		​		​	​		Weighted			​	​
​	​	​	​	Weighted		​	average	​	​	​	​
​	​	​	​	average		​	remaining	​	Aggregate		​
​	​	Number of	​	exercise		​	contractual	​	intrinsic		​
​	​	options	​	price		​	term (years)	​	value ($)		​
​	​	​	​	​	​	​	​	​	(in Thousands)		​
Options outstanding at December 31, 2020		651,127	​	$	27.24	​	​	​	​	​	​
Plus: Options granted		18,000	​		37.76	​	​	​	​	​	​
Less:	​	​	​	​	​	​	​	​	​	​	​
Options exercised		110,000	​		21.94	​	​	​	​	​	​
Options expired		—	​		—	​	​	​	​	​	​
Options forfeited		38,576	​		33.19	​	​	​	​	​	​
Options outstanding at December 31, 2021		520,551	​		28.28		4.49	​	$	7,344	​
​	​	​	​	​	​	​	​	​	​	​	​
Options fully vested and exercisable at December 31, 2021		290,914	​	$	23.29		2.71	​	$	5,557	​

Schedule of other information pertaining to option activity

​

​	​	​	​	​	​	​	​	​	​	​
​	​	Twelve Months Ended December 31,
​	​	2021		​	2020		​	2019
Weighted average grant date fair value of stock options granted		$	10.20		$	2.46		$	7.38	​
Total fair value of stock options vested	​	$	1,308,000	​	$	1,218,000	​	$	1,333,000	​
Total intrinsic value of stock options exercised	​	$	2,536,000	​	$	356,000	​	$	2,373,000	​
​	​	​	​	​	​	​	​	​	​	​
​										​

X

- Definition

Tabular disclosure of the total intrinsic value of options exercised (or share units converted), share-based liabilities paid, and the total fair value of shares vested during the year.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
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- Definition

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.

+ References

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-SubTopic 10
-Section 50
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- Definition

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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-Name Accounting Standards Codification
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