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Note 12 - Segment Information - Operating Segment Asset Reconciliation (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Mar. 31, 2019
Assets		$ 423,467	$ 156,767
Corporate, Non-Segment [Member]
Assets		87,168	17,857
Sterilzation and Disinfection Control [Member] | Operating Segments [Member]
Assets		76,493	74,230
Instruments [Member] | Operating Segments [Member]
Assets		32,286	30,911
Biopharmaceutical Development [Member] | Operating Segments [Member]
Assets		196,366
Cold Chain Monitoring [Member] | Operating Segments [Member]
Assets		31,022	32,179
Cold Chain Packaging [Member] | Operating Segments [Member]
Assets	[1]	$ 132	$ 1,590
[1] Represents net receivables from Cold Chain Packaging customers. The majority of Cold Chain Packaging's receivables are expected to be collected during the three months ending March 31, 2020.

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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