Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Note Payable (Details Textual)

v3.7.0.1
Note 5 - Note Payable (Details Textual) - USD ($)
3 Months Ended
Jun. 20, 2016
Mar. 31, 2017
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   425,274
June 2016 Issuance Related to 2016 Loan Agreement [Member]    
Warrant Term 10 years  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 100,402 100,402
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 4.98 $ 4.98
The 2016 Loan Agreement [Member] | Western Alliance Bank [Member]    
Debt Instrument, Face Amount $ 10,000,000  
Debt Instrument Repayment Of Principal And Interest Number Of Installments 30  
Debt Instrument, Interest Rate, Effective Percentage   7.94%
Debt Instrument, Covenant, Actual Performance Revenue to Planned Revenue, Minimum, Percentage   80.00%
Debt Instrument, Covenant, Unrestricted Cash in Accounts to Indebtedness Ratio   1.25
Debt Instrument, Covenant, Minimum Unrestricted Cash in Accounts   $ 2,000,000
Debt Instrument, Fee, Percentage   4.00%
The 2016 Loan Agreement [Member] | Western Alliance Bank [Member] | Minimum [Member]    
Debt Instrument, Interest Rate, Stated Percentage 7.40%  
The 2016 Loan Agreement [Member] | Western Alliance Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]    
Debt Instrument, Basis Spread on Variable Rate 6.96%  
The 2016 Loan Agreement [Member] | Western Alliance Bank [Member] | First Tranche [Member]    
Proceeds from Issuance of Long-term Debt $ 7,500,000  
The 2016 Loan Agreement [Member] | Western Alliance Bank [Member] | Second Tranche [Member]    
Proceeds from Issuance of Long-term Debt $ 2,500,000