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Note F - Debt - Future Debt Payments (Details) - Wells Fargo Bank, N.A. [Member] - Credit Agreement [Member] - Term Loan [Member] $ in Thousands	Jun. 30, 2025 USD ($)
Future Debt Payments, 2026	$ 305
Future Debt Payments, 2027	315
Future Debt Payments, 2028	325
Future Debt Payments, 2029	7,988
Future Debt Payments, 2030	0
Future Debt Payments, total	$ 8,933

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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