Note 7 - Long-term Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Total debt	$ 2,120
Debt Instruments, Excluding Paycheck Protection Program Liability [Member]
Total debt	2,120
Less current portion:	(659)
Long-term debt, net of current portion	1,461
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] \| Vendor Loan [Member]
Total debt	724
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] \| Term Loans, One [Member]
Total debt	574
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] \| Term Loans, Two [Member]
Total debt	470
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] \| Seller Note [Member]
Total debt	$ 352

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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