Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Details Narrative)

v3.10.0.1
Notes Payable (Details Narrative) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Unamortized discount $ 1,784,030  
12% Junior Secured Notes Payable 2014 [Member]    
Debt Instrument [Line Items]    
Stated interest rate 12.00% 12.00%
Debt face amount $ 1,975,000 $ 1,975,000
Maturity date Mar. 25, 2019 Mar. 25, 2019
12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member]    
Debt Instrument [Line Items]    
Debt frequency of periodic payment

Semi-annually

  
Description of collateral terms

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

  
Unamortized discount $ 40,662 $ 67,770
12% Junior Secured Notes Payable 2014 [Member] | Placement Agents [Member] | Private Placement (Securities Purchase Agreements) [Member]    
Debt Instrument [Line Items]    
Placement agents cash commission 145,500  
Other offering expenses 19,596 $ 32,660
Notes Payable [Member]    
Debt Instrument [Line Items]    
Debt face amount $ 4,000,000  
2010 Junior Secured Notes Payable [Member]    
Debt Instrument [Line Items]    
Stated interest rate 3.50% 3.50%
Debt face amount $ 3,000,000 $ 3,000,000
2010 Junior Secured Notes Payable [Member] | Chairman and Officer [Member]    
Debt Instrument [Line Items]    
Debt face amount $ 197,000 197,000
2010 Junior Secured Notes Payable [Member] | Private Placement (Securities Purchase Agreements) [Member]    
Debt Instrument [Line Items]    
Description of collateral terms

Collateralized by a security interest in all the Company’s assets, which security interest is junior and subordinate to the security interest that collateralizes the Brainlab Note and the 2014 Secured Notes

  
Unamortized discount $ 1,723,772 $ 1,956,458
Interest expense terms

10-year term of the notes using the effective interest method.

  
Description of payment terms

Interest on the 2010 Secured Notes will be due and payable in a single payment upon maturity.

  
New Brainlab Note (amended and restated secured note) [Member] | Securities Purchase Agreement (the "2016 PIPE Purchase Agreement") [Member]    
Debt Instrument [Line Items]    
Description of collateral terms

Note is collateralized by a senior security interest in all the assets of the Company.

  
Brainlab Senior Secured Note Payable [Member]    
Debt Instrument [Line Items]    
Stated interest rate 5.50% 5.50%
Debt face amount $ 2,000,000 $ 2,000,000
Maturity date Dec. 31, 2018 Dec. 31, 2018
Warrant [Member] | 12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member]    
Debt Instrument [Line Items]    
Number of each common stock called 0.01