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Note 11 - Goodwill and Intangibles - Summary of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Balance	$ 6,627	$ 6,528
Currency translation effect on foreign goodwill balances	(134)	87
Balance	6,493	6,615
Clearfield [Member]
Balance	4,709	4,709
Currency translation effect on foreign goodwill balances	0	0
Balance	4,709	4,709
Nestor [Member]
Balance	1,918	1,819
Currency translation effect on foreign goodwill balances	(134)	87
Balance	$ 1,784	$ 1,906

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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