Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Details Narrative)

v3.5.0.2
Notes Payable (Details Narrative) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Apr. 04, 2016
Dec. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Debt Instrument [Line Items]                
Proceeds from common stock called   $ 4,700,000 $ 9,400,000 $ 3,500,000        
Unamortized discount         $ 2,539,510   $ 2,539,510  
Other offering expenses   $ 166,080            
Accrued interest         $ 715,125   $ 715,125  
Common stock par value (in dollars per share)   $ 0.01     $ 0.01   $ 0.01  
Loss on restructuring of debt         $ 121,224 $ 121,224
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            

Principal and accrued interest is payable in a single aggregate installment upon maturity.

  
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] | 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 (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 [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] | Maximum [Member]                
Debt Instrument [Line Items]                
Stated interest rate 10.00%              
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] | Private Placement (Securities Purchase Agreements) [Member]                
Debt Instrument [Line Items]                
Debt face amount   740,000            
Gain on foregoing of debt         941,000   $ 941,000  
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   301,531   $ 413,057 263,721   263,721  
2014 Secured Notes [Member] | Private Placement (Securities Purchase Agreements) [Member] | Non-Employee Directors [Member]                
Debt Instrument [Line Items]                
Debt face amount       1,100,000        
Fair value       30,210        
Placement agents cash commission       $ 145,500        
Number of warrants issued to placement agent       1,818        
Other offering expenses   $ 166,080   $ 76,186 $ 141,223   $ 141,223  
New Brainlab Note (amended and restated secured note) [Member]                
Debt Instrument [Line Items]                
Number of warrants issued to placement agent             46,207  
New Brainlab Note (amended and restated secured note) [Member] | 2016 Securities Purchase Agreement [Member]                
Debt Instrument [Line Items]                
Debt face amount $ 2,000,000              
Maturity date Dec. 31, 2018              
Loss on restructuring of debt             $ 820,000