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Note P - Share-based Compensation - Share-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total share-based compensation expense	$ 12,121	$ 13,046	$ 11,804
Cost of Sales [Member]
Total share-based compensation expense	885	937	772
Research and Development Expense [Member]
Total share-based compensation expense	2,173	2,812	2,557
Selling and Marketing Expense [Member]
Total share-based compensation expense	1,115	1,191	1,070
General and Administrative Expense [Member]
Total share-based compensation expense	$ 7,948	$ 8,106	$ 7,405

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

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-Name Accounting Standards Codification
-Topic 718
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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-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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