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Note 6 - Fair Value Measurements - Financial Assets Measured at Fair Value on Recurring Basis Based on Level 3 Inputs (Details) - Contingent Consideration [Member] - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
December 31, 2020 | $ 930,000 | $ 0
Change in fair value | (930,000) | 930,000
Balance | $ 0 | $ 930,000

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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Details
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