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Note 10 - Accrued and Other Liabilities (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Deferred Rent Credit		$ 1,991
Minimum [Member]
Extended Product Warranty Term (Year)	1 year
Maximum [Member]
Extended Product Warranty Term (Year)	2 years

X

- Definition

Represents term of extended product warranty.

+ References

No definition available.

+ Details

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X

- Definition

The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e39896-112707

+ Details

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Period Type:	instant

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- Details

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- Details

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