Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' DEFICIT (Details 3)

v3.21.2
STOCKHOLDERS' DEFICIT (Details 3)
Dec. 31, 2020
$ / shares
shares
Jun. 29, 2020
$ / shares
Jun. 19, 2019
$ / shares
Oct. 31, 2018
$ / shares
shares
Class Of Warrant Or Right [Line Items]        
Stock price | $ / shares   $ 1.67 $ 10.30  
Number outstanding | shares 8,439,480      
Convertible Promissory Note [Member]        
Class Of Warrant Or Right [Line Items]        
Stock price | $ / shares $ 1.68     $ 1.23
Number outstanding | shares 1,250,000     1,250,000
Convertible Promissory Note [Member] | Measurement Input, Exercise Price [Member]        
Class Of Warrant Or Right [Line Items]        
Warrants and rights outstanding, measurement input 2.05     2.05
Convertible Promissory Note [Member] | Risk-free Interest Rate (South Korea government bond) [Member]        
Class Of Warrant Or Right [Line Items]        
Warrants and rights outstanding, measurement input 0.31     0.33
Convertible Promissory Note [Member] | Measurement Input, Expected Volatility (Peer Group) [Member]        
Class Of Warrant Or Right [Line Items]        
Warrants and rights outstanding, measurement input 101.00     94.00
Convertible Promissory Note [Member] | Measurement Input, Expected Life (in Years) [Member]        
Class Of Warrant Or Right [Line Items]        
Expected life (in years) 4 years 5 months 15 days     5 years