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Note 1 - Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2023

Notes Tables

Property, Plant and Equipment, Useful Life [Table Text Block]

Category	Useful Lives in Years
Buildings and building improvements	40 (or less)
Manufacturing equipment	7 (or less)
Office, lab and other equipment	7 (or less)
Computer equipment	3 (or less)
Leasehold improvements	Lesser of the economic life or the remaining term in the respective lease

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Tabular disclosure of useful life for property, plant and equipment.

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