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Stockholders' Equity (Details) - Service-Based Stock Options [Member] - shares
9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Options/Warrants, Beginning Balance 10,960,800 10,700,273
Number of Options, Issued 600,000 1,600,000
Number of Options, Expired (500,000)  
Number of Options, Exercised (40,800) (1,339,473)
Number of Options/Warrants, Ending balance 11,020,000 10,960,800