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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Allowance for doubtful accounts receivable	$ 1,363	$ 849
Property, plant and equipment, accumulated Depreciation	$ 22,574	$ 19,768
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	25,000,000	25,000,000
Common stock, issued (in shares)	5,394,043	5,369,466
Common stock, outstanding (in shares)	5,394,043	5,369,466

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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