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Equity - Summary of Option Activities (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Number of shares outstanding, beginning balance 510,000 200,000
Number of shares, granted 835,000 460,000
Number of shares cancelled 0 (150,000)
Number of shares outstanding, ending balance 1,345,000 510,000
Number of shares exercisable, end of period 50,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]    
Weighted average grant date fair value, outstanding, beginning of period (in dollars per share) $ 3.40 $ 0.14
Weighted average grant date fair value, granted (in dollars per share) 1.59 3.75
Weighted average grant date fair value, cancelled (in dollars per share)   0.14
Weighted average grant date fair value, outstanding, end of period (in dollars per share) 1.93 3.40
Weighted average grant date fair value, exercisable (in dollars per share) 0.13  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Weighted average exercise price, outstanding, beginning of period (in dollars per share) 5.28 0.20
Weighted average exercise price, granted (in dollars per share) 2.42 5.83
Weighted average exercise price, cancelled (in dollars per share)   0.20
Weighted average exercise price, outstanding, end of period (in dollars per share) 3.50 $ 5.28
Weighted average exercise price, exercisable (in dollars per share) $ 0.20  
Weighted average remaining contractual term outstanding (in years) 9 years 26 days 9 years 3 months 15 days
Weighted average remaining contractual term exercisable (in years) 2 years 5 months 1 day  
Aggregate intrinsic value, outstanding balance $ 83,000 $ 275,500
Aggregate intrinsic value, exercisable $ 83,000