Note 15 - Commitments and Contingencies (Details Textual) $ / shares in Units, $ in Thousands, $ in Millions			12 Months Ended
	Oct. 02, 2020 USD ($) $ / shares shares	Oct. 02, 2020 CAD ($) shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($)	Jun. 07, 2021 $ / shares
Increase (Decrease) in Other Employee-Related Liabilities | $			$ 2,625	$ 1,554
Defined Contribution Plan, Employer Discretionary Contribution Amount | $			$ 219	$ 206
Share Price (in dollars per share) | $ / shares	$ 5.98		$ 5.18		$ 5.05
Assets Acquisition of Amika Mobile Corporation [Member]
Asset Purchase Agreement, Deduction From Liability	$ 787	$ 1
Asset Purchase Agreement, Deduction, Term (Year)	3 years	3 years
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Each Anniversaries (in shares) | shares	191,267	191,267
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares	573,801	573,801	208,692
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $	$ 3,431
Assets Acquisition of Amika Mobile Corporation [Member] | Former Owner of Amika Mobile [Member]
Stock Issued During Period, Shares, Acquisitions (in shares) | shares			365,109