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Note 13 - Commitments and Contingencies (Details Textual)
 3 Months Ended
Jan. 03, 2018
USD ($)
ft²
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Area of Leased Facility | ft² 54,766    
Operating Leases, Average Monthly Payments Due, Current $ 36,146    
Operating Leases, Average Monthly Payments, Due in Second Year 74,460    
Operating Leases, Average Monthly Payments, Due in Third Year 76,694    
Operating Leases, Average Monthly Payments, Due in Fourth Year 78,994    
Operating Leases, Average Monthly Payments, Due in Fifth Year 81,364    
Operating Leases, Average Monthly Payments, Due in Sixth Year 83,805    
Operating Leases, Average Monthly Payments, Due in Seventh Year 86,319    
Operating Leases, Average Monthly Payments, Due in Eighth Year 88,909    
Operating Leases, Average Monthly Payments, Due in Ninth Year 91,576    
Operating Leases, Average Monthly Payments, Due in Tenth Year 94,324    
Allowance for Tenant Improvements $ 1,588,214 $ 1,588,214  
Bonuses and Related Payroll Tax Expense [Member]      
Increase (Decrease) in Other Employee-Related Liabilities   $ 392,930 $ 405,267