Note 8 - Income Taxes (Details) - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Details
Deferred Tax Assets, Operating Loss Carryforwards	$ 44,800,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	18,200,000
Net operating loss carryforwards, subsidiary	16,900,000
Deferred Tax Assets, Other Tax Carryforwards	6,700,000
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 697,000	$ 697,000

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant