v3.19.3.a.u2
Summary of Significant Accounting Policies - Schedule of Available-for-sale Securities (Details) (10-K) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Unrealized Losses $ (923) $ 923
Corporate Debt Securities [Member]        
Amortized Cost     4,010,003  
Unrealized Gains     27  
Unrealized Losses     (463)  
Fair Value     4,009,567  
Commercial Paper [Member]        
Amortized Cost     2,979,583  
Unrealized Gains     72  
Unrealized Losses     (442)  
Fair Value     2,979,213  
Available-for-sale Securities [Member]        
Amortized Cost     6,989,586  
Unrealized Gains     99  
Unrealized Losses     (905)  
Fair Value     $ 6,988,780