Annual report pursuant to Section 13 and 15(d)

Convertible Unsecured Notes (Details Textual)

v3.8.0.1
Convertible Unsecured Notes (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Jan. 30, 2017
Dec. 01, 2016
Nov. 01, 2016
Sep. 01, 2016
Mar. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]                
Ownership percentage             50.00%  
Fair value of additional issuance to warrants               $ 4,133,000
Securities Purchase Agreement [Member]                
Debt Instrument [Line Items]                
Warrants exercisable term       5 years        
Purchase of warrants 62,500 62,500 62,500 124,999 62,500   62,500  
Aggregate of warrants to purchase 250,000              
Exercise price per share       $ 4.00        
Convertible unsecured notes       $ 1,250,000   $ 1,250,000   1,250,000
Transaction expenses and consisting of legal costs       45,000        
Net proceeds       $ 1,205,000        
Convertible unsecured notes bear interest rate       12.00%        
Unsecured notes maturity date       Sep. 01, 2017        
Unsecured notes conversion, description      

The Convertible Unsecured Notes are subordinate to the Senior Notes described in Note 8. The Convertible Unsecured Notes were initially convertible at the option of the holder into common stock at a conversion price of $4.31 per share and will automatically convert into shares of common stock in the event of a conversion of at least 50% of the then outstanding (i) principal, (ii) accrued and unpaid interest with respect to such principal and (iii) accrued and unpaid late charges, if any, with respect to such principal and interest, under the Senior Notes. In connection with the issuance of the 2016 Senior Notes and amendment and restatement of the 2015 Senior Notes, the conversion price was reduced to $2.50 per share.

       
Ownership percentage       9.99%        
Unpaid interest rate on notes       100.00%        
Warrants valued using the black-scholes option pricing model         $ 73,000      
Debt discount       $ 553,000        
Securities Purchase Agreement One [Member]                
Debt Instrument [Line Items]                
Warrants exercisable term       5 years        
Purchase of warrants       62,500        
Exercise price per share       $ 4.00        
Gross proceeds from issuance of warrants       $ 3,000,000        
Minimum [Member] | Securities Purchase Agreement [Member]                
Debt Instrument [Line Items]                
Exercise price per share           $ 3.00    
Debt discount           $ 305,000   305,000
Fair value of additional issuance to warrants           $ 30,000    
Maximum [Member] | Securities Purchase Agreement [Member]                
Debt Instrument [Line Items]                
Exercise price per share           $ 4.00    
Debt discount           $ 335,000   $ 335,000
Fair value of additional issuance to warrants           $ 305,000