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

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Note 11 - Stock Option Plans and Stock-based Compensation - Shares Outstanding Under Option Plan (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Options outstanding (in shares)	192,898	192,898	65,471	112,932
Weighted average remaining contractual life (Year)	6 years 3 months 7 days	6 years 9 months 3 days
Shares exercisable (in shares)	112,744	95,803
Weighted average exercise price (in dollars per share)	$ 11.51	$ 8.46
Range 1 [Member]
Options outstanding (in shares)		48,724
Weighted average remaining contractual life (Year)		10 months 6 days
Shares exercisable (in shares)		48,724
Weighted average exercise price (in dollars per share)		$ 11.89
Range 2 [Member]
Options outstanding (in shares)		16,747
Weighted average remaining contractual life (Year)		2 years 11 months 4 days
Shares exercisable (in shares)		16,747
Weighted average exercise price (in dollars per share)		$ 31.33
Range 3 [Member]
Options outstanding (in shares)		81,227
Weighted average remaining contractual life (Year)		9 years 3 months 21 days
Shares exercisable (in shares)		17,832
Weighted average exercise price (in dollars per share)		$ 4.38
Range 4 [Member]
Options outstanding (in shares)		46,200
Weighted average remaining contractual life (Year)		9 years 10 months 20 days
Shares exercisable (in shares)		12,500
Weighted average exercise price (in dollars per share)		$ 3.72