Note O - Supplemental Cash Flow Information (Details Textual) - USD ($) $ in Millions	6 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Interest Paid, Including Capitalized Interest, Operating and Investing Activities	$ 1.6	$ 1.2
Income Taxes Paid, Net	$ 2.9	$ 2.7

Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-22

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-Name Accounting Standards Codification
-Topic 230
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

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