Note 5 - Fair Value Measurements (Details Textual) $ in Thousands, $ in Millions	Oct. 02, 2020 USD ($)	Oct. 02, 2020 CAD ($)	Oct. 02, 2020 CAD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)
Marketable Securities, Total				$ 0	$ 0
Assets Acquisition of Amika Mobile Corporation [Member]
Asset Purchase Agreement, Deduction From Liability	$ 799	$ 1	$ 1
Asset Acquisition, Adjustments from Purchase Holdback Liability, Period (Year)	3 years	3 years