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Note 12 - Segment Information - Operating Segment Asset Reconciliation (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021	Mar. 31, 2020
Total inventories	$ 12,117	$ 11,178	$ 11,178
Operating Segments [Member] | Sterilization and Disinfection Control [Member]
Total inventories	2,187	2,333
Operating Segments [Member] | Biopharmaceutical Development [Member]
Total inventories	3,706	4,162
Operating Segments [Member] | Instruments [Member]
Total inventories	4,566	3,253
Operating Segments [Member] | Continuous Monitoring [Member]
Total inventories	$ 1,658	$ 1,430

X

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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