Date the equity-based award expires, in YYYY-MM-DD format.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note 7 - Stock Options - Details of Options Outstanding (Details) - shares	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of options outstanding (in shares)	1,815,000	5,415,000	5,315,000
Exercisable (in shares)	1,444,000
Range Two [Member]
Number of options outstanding (in shares)	250,000
Expiry date	Dec. 21, 2023
Exercisable (in shares)	250,000
Remaining contractual life (Year)	2 months 19 days
Range Three [Member]
Number of options outstanding (in shares)	500,000
Expiry date	Jan. 29, 2024
Exercisable (in shares)	500,000
Remaining contractual life (Year)	3 months 29 days
Range Four [Member]
Number of options outstanding (in shares)	375,000
Expiry date	Jun. 10, 2024
Exercisable (in shares)	300,000
Remaining contractual life (Year)	8 months 12 days
Range Five [Member]
Number of options outstanding (in shares)	590,000
Expiry date	Oct. 14, 2024
Exercisable (in shares)	354,000
Remaining contractual life (Year)	1 year 14 days
Range Six [Member]
Number of options outstanding (in shares)	100,000
Expiry date	Jan. 31, 2025
Exercisable (in shares)	40,000
Remaining contractual life (Year)	1 year 4 months 2 days