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Note 12 - Segment Information - Segment Inventory (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Mar. 31, 2023
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Total inventories | $ 32,879 | $ 34,642
Operating Segments [Member] | Sterilization and Disinfection Control [Member] |  |
Total inventories | 3,889 | 3,492
Operating Segments [Member] | Clinical Genomics [Member] |  |
Total inventories | 11,330 | 13,985
Operating Segments [Member] | Biopharmaceutical Development [Member] |  |
Total inventories | 8,541 | 8,384
Operating Segments [Member] | Calibration Solutions [Member] |  |
Total inventories | $ 9,119 | $ 8,781

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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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