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Note 5 - Fair Value Measurements (Details Textual) $ in Thousands, $ in Thousands			12 Months Ended
	Oct. 01, 2020 USD ($)	Oct. 01, 2020 CAD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Aug. 31, 2020 CAD ($)
Derivative, Gain (Loss) on Derivative, Net, Total			$ (76)
Foreign Exchange Forward [Member]
Derivative, Notional Amount				0	$ 6,955
Foreign Exchange Forward [Member] | Subsequent Event [Member]
Payments for Derivative Instrument, Financing Activities	$ 5,281	$ 6,955
Derivative, Gain (Loss) on Derivative, Net, Total	$ (48)
Fair Value, Inputs, Level 3 [Member]
Marketable Securities, Total			$ 0	$ 0

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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Amount of investment in marketable security.

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- Definition

The cash outflow for derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

+ References

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