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Note 16 - Segment Data - Segment Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Total inventories	$ 11,178	$ 14,230
Operating Segments [Member]
Total inventories	11,178	14,230
Operating Segments [Member] | Sterilization and Disinfection Control [Member]
Total inventories	2,333	2,104
Operating Segments [Member] | Instruments [Member]
Total inventories	3,253	3,065
Operating Segments [Member] | Biopharmaceutical Development [Member]
Total inventories	4,162	7,438
Operating Segments [Member] | Cold Chain Monitoring [Member]
Total inventories	1,430	1,623
Corporate, Non-Segment [Member]
Total inventories	$ 0	$ 0

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
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-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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