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The following table summarizes additional stock option information as of December 31, 2023: (Details)	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Options outstanding	308,970
Options outstanding weighted average remaining contractual life	2 years 10 months 6 days
Options exercisable	186,870
Exercise Price Range One [Member]
Options outstanding	100,680
Options outstanding weighted average remaining contractual life	1 year 18 days
Options exercisable	96,180
Exercise Price Range Two [Member]
Exercise price range (in dollars per share) | $ / shares	$ 73.09
Options outstanding	104,790
Options outstanding weighted average remaining contractual life	2 years
Options exercisable	79,490
Exercise Price Range Three [Member]
Exercise price range (in dollars per share) | $ / shares	$ 97.84
Options outstanding	56,000
Options outstanding weighted average remaining contractual life	5 years
Options exercisable	11,200
Exercise Price Range Four [Member]
Exercise price range (in dollars per share) | $ / shares	$ 147.71
Options outstanding	47,500
Options outstanding weighted average remaining contractual life	6 years
Options exercisable
Minimum [Member] | Exercise Price Range One [Member]
Exercise price range (in dollars per share) | $ / shares	$ 62.18
Maximum [Member] | Exercise Price Range One [Member]
Exercise price range (in dollars per share) | $ / shares	$ 69.11

X

- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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