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Note 10 - Capital Stock and Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based compensation	$ 1,153	$ 1,023
Continuing Operations [Member] | Cost of Sales [Member]
Share-based compensation	69	36
Continuing Operations [Member] | Selling and Marketing Expense [Member]
Share-based compensation	145	154
Continuing Operations [Member] | General and Administrative Expense [Member]
Share-based compensation	869	791
Continuing Operations [Member] | Research and Development Expense [Member]
Share-based compensation	$ 70	$ 42

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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