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Share-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2018
Restricted shares granted on June 30, 2015 [Member]  
Schedule of non-vested restricted shares
Non-vested shares as of January 1, 2018   　55,000 
Granted   - 
Vested   　(55,000) 
Non-vested shares as of December 31, 2018   - 
Restricted shares granted on April 19, 2016 [Member]  
Schedule of non-vested restricted shares
Non-vested shares as of January 1, 2018   255,500 
Granted   - 
Vested   (157,165)
Forfeited   (13,505)
Non-vested shares as of December 31, 2018   84,830