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Note 3 - Inventory (Details Textual) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
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Inventory Adjustments, Total | $ 5.0 | $ 3.8

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- Definition Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=116847112&loc=d3e4492-108314 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant