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Stock Based Compensation (Details Narrative) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jul. 27, 2017
Share-based compensation, shares subject to stock options 2,865,512   2,751,009   2,751,009    
Number of warrants issued             500,000
Exercise price of warrants             $ 6.60
Expected dividend yield         0.00% 0.00%  
Warrants [Member]              
Expected dividend yield         0.00% 0.00%  
Warrants outstanding 3,980,781   3,647,447   3,647,447    
Weighted-average exercise price of warrants outstanding $ 4.26   $ 4.27   $ 4.27    
Former Employees and Directors [Member]              
Unrecognized compensation expense related to unvested stock options, granted     $ 1,000,000   $ 1,000,000    
Unrecognized compensation cost, recognized as expense over a weighted-average period         11 months 4 days    
Restricted Stock [Member]              
Restricted stock expense     $ 139,296 $ 83,029 $ 277,062 $ 165,146  
Stock Options [Member]              
Number of warrants issued     1,667 1,667 1,667 1,667  
Exercise price of warrants     $ 1.89 $ 2.46 $ 1.89 $ 2.46  
Contractual term         10 years    
Expected dividend yield         0.00%    
2000 Long Term Incentive Plan [Member]              
Expiration date         Aug. 06, 2010    
Share-based compensation, shares subject to stock options     30,682   30,682    
2008 Stock Incentive Plan [Member]              
Share-based compensation, shares subject to stock options     2,700,000   2,700,000    
2008 Stock Incentive Plan [Member] | Restricted Stock [Member]              
Share-based compensation, outstanding stock options     800,000   800,000    
2008 Stock Incentive Plan [Member] | Restricted Stock [Member] | Chairman and Chief Executive Officer [Member]              
Share based compensation arranged by share based payment award restricted stock granted (in shares) 387,597 387,597          
Vesting period 3 years 3 years          
Share based compensation of fair value of restricted stock on grant $ 679,000 $ 1,000,000