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Note 8 - Capital Stock and Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-based compensation	$ 1,239	$ 1,164	$ 2,262	$ 2,132
Continuing Operations [Member] | Cost of Sales [Member]
Share-based compensation	52	31	88	51
Continuing Operations [Member] | Selling and Marketing Expense [Member]
Share-based compensation	192	131	346	224
Continuing Operations [Member] | General and Administrative Expense [Member]
Share-based compensation	923	969	1,714	1,803
Continuing Operations [Member] | Research and Development Expense [Member]
Share-based compensation	$ 72	$ 33	$ 114	$ 54

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

+ Details

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