Annual report pursuant to Section 13 and 15(d)

Notes Payable (Details Narrative)

v3.7.0.1
Notes Payable (Details Narrative) - USD ($)
1 Months Ended 12 Months Ended
Apr. 04, 2016
Mar. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]        
Proceeds from common stock called     $ 5,800,000 $ 8,600,000
Unamortized discount     $ 2,424,457  
Common stock par value (in dollars per share)     $ 0.01 $ 0.01
Loss on restructuring of debt     $ (811,909)
Private Placement (Securities Purchase Agreements) [Member] | 12% Junior Secured Notes Payable 2014 [Member] | Warrant [Member]        
Debt Instrument [Line Items]        
Number of each common stock called   0.01    
Number of common stock called   27,937    
Proceeds from common stock called   $ 3,725,000    
Warrant exercise price (in dollars per share)   $ 70.00    
Fair value   $ 413,057    
Brainlab Senior Secured Note Payable [Member]        
Debt Instrument [Line Items]        
Stated interest rate       5.50%
Description of maturity date    

Matures on December 31, 2018.

 
Debt face amount       $ 5,000,000
Description of payment terms    

Payable in a single aggregate installment upon maturity.

 
Maturity date       Apr. 30, 2016
Brainlab Senior Secured Note Payable [Member] | 2016 Securities Purchase Agreement (Patent And Technology License Agreement) [Member]        
Debt Instrument [Line Items]        
Debt cancelled principal amount $ 1,000,000      
Brainlab Senior Secured Note Payable [Member] | 2016 Securities Purchase Agreement (Patent And Technology License Agreement) [Member] | 2016 Series A Warrants [Member]        
Debt Instrument [Line Items]        
Number of each common stock called 0.40      
Warrant exercise price (in dollars per share) $ 16.23      
Number of common shares issued 1      
Brainlab Senior Secured Note Payable [Member] | 2016 Securities Purchase Agreement (Patent And Technology License Agreement) [Member] | 2016 Series B Warrants [Member]        
Debt Instrument [Line Items]        
Number of each common stock called 0.30      
Warrant exercise price (in dollars per share) $ 21.10      
Number of common shares issued 1      
Brainlab Senior Secured Note Payable [Member] | 2016 Securities Purchase Agreement (Patent And Technology License Agreement) [Member] | Common Stock [Member]        
Debt Instrument [Line Items]        
Common stock par value (in dollars per share) $ 0.01      
Number of common shares issued 1      
Brainlab Senior Secured Note Payable [Member] | 2016 Securities Purchase Agreement [Member]        
Debt Instrument [Line Items]        
Accrued interest $ 740,000      
Debt cancelled principal amount $ 1,300,000      
Number of units issued 99,310      
Brainlab Senior Secured Note Payable [Member] | 2016 Registration Rights Agreement [Member]        
Debt Instrument [Line Items]        
Debt face amount $ 1,300,000      
Brainlab Senior Secured Note Payable [Member] | 2016 Registration Rights Agreement [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Stated interest rate 2.00%      
Brainlab Senior Secured Note Payable [Member] | 2016 Registration Rights Agreement [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Stated interest rate 10.00%      
Brainlab Senior Secured Note Payable [Member] | Private Placement (Securities Purchase Agreements) [Member]        
Debt Instrument [Line Items]        
Debt face amount       $ 740,000
Gain on foregoing of debt     $ 941,000  
New Brainlab Note (amended and restated secured note) [Member] | 2016 Securities Purchase Agreement [Member]        
Debt Instrument [Line Items]        
Debt face amount $ 2,000,000      
Description of collateral terms

Collateralized by a senior security interest in the assets of the Company. 

     
Maturity date Dec. 31, 2018      
Loss on restructuring of debt     820,000  
2014 Secured Notes [Member] | Private Placement (Securities Purchase Agreements) [Member]        
Debt Instrument [Line Items]        
Debt face amount   $ 3,725,000    
Maturity period   5 years    
Debt frequency of periodic payment  

Semi-annually

   
Description of collateral terms  

The 2014 Secured Notes are collateralized by a security interest in the Company’s property and assets, which security interest is junior and subordinate to the security interest that collateralizes the New Brainlab note.

   
Unamortized discount   $ 413,057 121,985 301,531
2014 Secured Notes [Member] | Private Placement (Securities Purchase Agreements) [Member] | Non-Employee Directors [Member]        
Debt Instrument [Line Items]        
Debt face amount   1,100,000    
Other offering expenses     $ 58,789 $ 166,080
2014 Secured Notes [Member] | Private Placement (Securities Purchase Agreements) [Member] | Placement Agents [Member]        
Debt Instrument [Line Items]        
Fair value   30,210    
Placement agents cash commission   145,500    
Other offering expenses   $ 76,186    
2014 Secured Notes [Member] | Private Placement (Securities Purchase Agreements) [Member] | Placement Agents [Member] | Warrant [Member]        
Debt Instrument [Line Items]        
Number of warrants issued to placement agent   1,818