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Note 8 - Commitments (Details Textual)
Sep. 30, 2018
USD ($)
ft²
Area of Real Estate Property | ft² 8,400
Operating Leases, Future Minimum Payments Due, Total $ 200,402
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 39,136
Operating Leases, Future Minimum Payments, Due in Two Years 161,266
Unrecorded Unconditional Purchase Obligation, Total $ 209,000