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Note 5 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Sep. 30, 2025
Assets, Fair Value Disclosure	$ 153,264	$ 149,545
Unrealized Gain (Loss) on Investments	0
Long-Term Debt, Fair Value	0	0
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure	0	0
Liabilities, Fair Value Disclosure	$ 0	$ 0

X

- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

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-Topic 820
-SubTopic 10
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X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

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X

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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X

- Definition

Amount of unrealized gain (loss) on investment.

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X

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