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Equity (Details Narrative) - USD ($)
 1 Months Ended 6 Months Ended 12 Months Ended
Jun. 07, 2017
May 17, 2017
May 27, 2016
Dec. 31, 2015
Oct. 04, 2013
Jan. 31, 2018
May 31, 2015
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Ordinary shares, authorized               100,000,000   100,000,000  
Ordinary shares, value               $ 124,646,996   $ 123,950,544  
Exercise of stock options granted               802,800      
Common stock shares repurchase       $ 7,100,000 $ 9,000,000            
Common stock shares repurchase, shares       1,402,448              
Additional paid-in capital               $ 15,454,288 $ 7,000,000 15,814,328  
Retained earnings               $ (170,390,549) 104,000 $ (172,395,246)  
Stock option to purchase common stock               200,000      
Sharebased compensation               $ 312,000 $ 247,000    
Weighted average fair value of options granted                 $ 0.59    
Intrinsic value of stock options exercised               72,000    
Unrecognized compensation expense non-vested shares options expenses               $ 1,000,000      
Weighted average remaining vesting period               2 years 10 months 25 days      
Fair value of stock option vested               $ 200,000 0    
Stock option vested, shares               1,528,000      
Issuance of common stock, shares             2,102,484 50,000      
Proceeds from issuance of common stock               $ 46,500      
Administrative expense               $ 1,780,694 1,269,973    
Stock option weighted average exercise price per shares               $ 1.11   $ 1.14  
Stock option weighted average remaining life               3 years 4 months 24 days      
2013 Equity Incentive Plan [Member]                      
Ordinary shares description               On September 11, 2013, the Board of Directors of the Company adopted the 2013 Equity Incentive Plan, or the 2013 Plan, pursuant to which, the Company may offer up to five million ordinary shares as equity incentives to its directors, employees and consultants.      
Issaunace of restricted stock, shares                    
2016 Equity Incentive Plan [Member]                      
Fair value of stock option grant date   $ 500,000 $ 1,600,000                
Stock option vested, shares                   250,000  
2016 Equity Incentive Plan [Member] | Administrative Expenses [Member]                      
Sharebased compensation               $ 202,000 227,000    
Treasury Stock [Member]                      
Ordinary shares was canceled 1,402,448                    
Employees and Consultants [Member]                      
Exercise of stock options granted           529,004          
Officers and Employees [Member] | 2013 Equity Incentive Plan [Member]                      
Issaunace of restricted stock, shares       4,467,135          
Officers and Employees [Member] | 2016 Equity Incentive Plan [Member]                      
Stock option to purchase common stock     2,712,000                
Employees and Directors [Member]                      
Stock option to purchase common stock                    
Employees and Directors [Member] | 2016 Equity Incentive Plan [Member]                      
Stock option to purchase common stock   960,000                  
Employees and Directors [Member] | 2016 Equity Incentive Plan [Member] | Administrative Expenses [Member]                      
Sharebased compensation               $ 88,000 20,000    
Consultants [Member] | 2016 Equity Incentive Plan [Member]                      
Stock option to purchase common stock                   250,000  
Non-employees [Member]                      
Exercise of stock options granted               50,000      
Administrative expense                 $ 22,000 $ 96,000  
Stock option weighted average exercise price per shares               $ 1.36      
Stock option weighted average remaining life               2 years 6 months 14 days