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Note H - Segment Information (Details Textual)	3 Months Ended		9 Months Ended
Note H - Segment Information (Details Textual)	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Number of Reportable Segments			2
Products Manufactured by NAIE [Member] \| Product Concentration Risk [Member] \| Revenue Benchmark [Member] \| Non-US [Member]
Concentration Risk, Percentage	84.00%	68.00%	82.00%	76.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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