Note 7 - Long-term Debt - Long-term Debt (Details) (Parentheticals)	9 Months Ended	12 Months Ended
Jun. 30, 2026	Sep. 30, 2025
Term Loans, Two [Member]
Interest rate	1.30%	1.30%
Maturity date	Jul. 31, 2028	Jul. 31, 2028
Seller Note [Member]
Interest rate	4.00%	4.00%
Maturity date	Oct. 31, 2025	Oct. 31, 2025

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration