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Note 11 - Share-based Compensation - Share-based Compensation Expense (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Share-based compensation expense	$ 857	$ 763
Basic earnings per share (in dollars per share)	$ 0.05	$ 0.05
Diluted earnings per share (in dollars per share)	$ 0.04	$ 0.04
Cost of Sales [Member]
Share-based compensation expense	$ 103	$ 74
Selling, General and Administrative Expenses [Member]
Share-based compensation expense	$ 754	$ 689

X

- Definition

Represents the reduction in basic earnings per share related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

No definition available.

+ Details

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X

- Definition

Represents the reduction in diluted earnings per share related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

No definition available.

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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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