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Stock Options (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Stock Options (Textual)        
Options outstanding   25,000    
Compensation cost $ 815,014 $ 384,126    
2013 Equity Compensation Plan [Member]        
Stock Options (Textual)        
Shares reserved for issuance 1,500,000      
Share-based compensation plan, description The Plan was amended in 2016 to increase the authorized shares to 4,000,000 shares and again in 2018 to increase the authorized shares to 5,500,000.      
Options outstanding   4,106,250    
Shares redeemed   685,015    
Restricted shares     735,105 735,105
Shares issued   50,000    
Options expired Dec. 31, 2017      
Non-vested shares   1,900,000    
Weighted average contractual life   1 year 1 month 6 days    
Options exercisable   1,220,000