Note 17 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2025
Cash and Cash Equivalent	$ 6,895	$ 26,338
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	1,200	800
Domestic Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance		43,781
Foreign Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	$ 40,851
Internal Revenue Service (IRS) [Member] | Domestic Tax Jurisdiction [Member]
Open Tax Year	2017 2018 2019 2020 2021 2022 2023 2024
Operating Loss Carryforwards		92,400
Operating Loss Carryforwards, Subject to Expiration		32,400
Operating Loss Carryforwards, Not Subject to Expiration		60,000
Deferred Tax Assets, Valuation Allowance	$ 36,100	39,000
Canada Revenue Agency [Member] | Foreign Tax Jurisdiction [Member]
Operating Loss Carryforwards		19,200
Deferred Tax Assets, Valuation Allowance	$ 4,800	4,700
Non-US [Member]
Cash and Cash Equivalent		$ 800