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Note 10 - Revenues and Other Related Items (Details Textual) - USD ($) $ in Millions	Jun. 30, 2022	Sep. 30, 2021
Non-US [Member]
Assets, Noncurrent, Total	$ 6.9	$ 7.5

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Balance Type:	debit
Period Type:	instant

X

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Namespace Prefix:
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Balance Type:
Period Type: