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Note 11 - Commitments and Contingencies (Details Textual)	1 Months Ended	12 Months Ended
	Aug. 31, 2016 shares	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Nov. 29, 2011 ft²
Area of Leased Facility | ft²				31,360
Operating Leases, Average Monthly Payments Due, Current		$ 16,306
Operating Leases, Average Monthly Payments, Due in Second Year		25,088
Operating Leases, Average Monthly Payments, Due in Third Year		26,656
Operating Leases, Average Monthly Payments, Due in Fourth Year		28,224
Operating Leases, Average Monthly Payments, Due in Fifth Year		29,792
Operating Leases, Average Monthly Payments, Due in Sixth Year		31,360
Operating Leases, Rent Expense, Net		351,418	$ 377,033
Defined Contribution Plan, Employer Discretionary Contribution Amount		196,239	157,081
Bonuses and Related Payroll Tax Expense [Member]
Increase (Decrease) in Other Employee-Related Liabilities		$ 1,100,693	$ 0
Performance Shares [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vesting Upon Employee Termination and Change of Control, Number of Shares | shares	375,000

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Area of leased facility.

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Operating leases average monthly payments due in third year.

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The number of performance-based equity instruments, excluding stock (or unit) options, that will vest in the case of employee termination and change of control.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Amount of increase (decrease) in employer-related costs classified as other and current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

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