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Note E - Stock-based Compensation (Details Textual)			1 Months Ended		6 Months Ended
	Feb. 15, 2024 shares	May 29, 2014	May 31, 2025 $ / shares shares	Aug. 31, 2021	Jun. 30, 2025 USD ($) $ / shares	Jun. 30, 2024 USD ($) $ / shares	Mar. 13, 2014 shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value					$ 437,000	$ 550,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Diluted (in dollars per share) | $ / shares					$ 0.01	$ 0.01
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 1,147,000	$ 1,779,000
Amortization, Current Year [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					336,000
Amortization, Next Year [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					304,000
Amortization Year 2 [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					242,000
Amortization, Year 3 [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					233,000
Salaries, Wages and Benefits [Member]
Share-Based Payment Arrangement, Expense					140,000	393,000
Salaries, Wages and Benefits [Member] | Director [Member]
Share-Based Payment Arrangement, Expense					$ 45,000	$ 38,000
Stock Split To [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				2
The 2024 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | shares	1,600,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent	100.00%
The 2024 Plan [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares			2,862
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares			$ 15.71
The 2014 Stock Option Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | shares							3,000,000
The 2014 Stock Option Plan [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent		85.00%

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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