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Note 3 - Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Dec. 31, 2016
USD ($)
shares
Dec. 31, 2015
USD ($)
shares
Allowance for Doubtful Accounts Receivable, Current $ 34,371 $ 158,800
Provision for Doubtful Accounts 156,978 135,434
Deferred Rent Credit $ 92,000 $ 17,000
Number of Outstanding Stock Based Option Awards and Warrants | shares 4,391,169 3,635,169
Net Income (Loss) Attributable to Parent $ (8,551,212) $ (1,261,022)
Deferred Tax Liabilities, Net, Noncurrent 468,565 4,417,043
Inventory Write-down 0 0
Asset Impairment Charges 0 0
Dilutive Securities, Effect on Basic Earnings Per Share 0 0
Goodwill, Impairment Loss $ 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00%  
Payments of Dividends $ 0  
Reclassification from Current Deferred Tax Assets to Noncurrent Deferred Tax Liabilities [Member] | December 31, 2015 [Member]    
Prior Period Reclassification Adjustment   237,411
Earliest Tax Year [Member]    
Open Tax Year 2012  
Latest Tax Year [Member]    
Open Tax Year 2016  
Leasehold Improvements [Member]    
Amortization $ 26,000 $ 7,000
Minimum [Member]    
Property, Plant and Equipment, Useful Life 5 years  
Maximum [Member]    
Property, Plant and Equipment, Useful Life 30 years  
Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Number of Major Customers 3 2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A [Member]    
Concentration Risk, Percentage 14.00% 28.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer B [Member]    
Concentration Risk, Percentage 14.00% 10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer C [Member]    
Concentration Risk, Percentage 11.00%  
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]    
Number of Major Customers 3 2
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer A [Member]    
Concentration Risk, Percentage 14.00% 11.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer B [Member]    
Concentration Risk, Percentage 11.00% 3.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer C [Member]    
Number of Major Customers   1
Concentration Risk, Percentage 12.00% 10.00%