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Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2018
Fair Value of Financial Instruments [Abstract]  
Fair Value of Financial Instruments
 
 
Fair Value Measurements at Reporting Date Using
 
 
 
Total
  
Quoted Prices in
Active Markets
(Level 1)
  
Quoted Prices in
Inactive Markets
(Level 2)
  
Significant
Unobservable Inputs
(Level 3)
 
As of June 30, 2018: (unaudited)
            
Cash and cash equivalents
 
$
45,978,737
  
$
45,978,737
  
$
-
  
$
-
 
 
                
As of December 31, 2017:
                
Cash and cash equivalents
 
$
88,067,647
  
$
88,067,647
  
$
-
  
$
-