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Note 15 - Major Customers, Suppliers, Segment and Related Information (Details Textual) | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016
Number of Reportable Segments | 1 |
Supplier Concentration Risk [Member] |  |
Number of Major Suppliers | 1 |
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] |  |
Concentration Risk, Percentage | 0.00% |
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |  |
Concentration Risk, Percentage | 15.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |
Concentration Risk, Percentage | 0.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |  |
Concentration Risk, Percentage | 31.00% | 27.00%

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- Definition Number of major suppliers. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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