Note 12 - Segment Reporting - Reconciliation of Assets from Segments to Consolidated (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023
Goodwill	$ 6,740	$ 6,627	$ 6,553	$ 6,528
Total assets	314,710	315,275
Clearfield [Member]
Goodwill	4,709	4,709	$ 4,709	$ 4,709
Operating Segments [Member] \| Clearfield [Member]
Goodwill	4,709	4,709
Total assets	292,178	300,472
Operating Segments [Member] \| Nestor Cables [Member]
Goodwill	2,031	1,918
Total assets	46,204	38,773
Intersegment Eliminations [Member]
Goodwill	0	0
Total assets	$ (23,672)	$ (23,970)

Amount of asset recognized for present right to economic benefit.

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+ Details

- 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.

+ References

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+ Details

Clearfield, Inc. 10-Q