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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
CONSOLIDATED BALANCE SHEETS    
Other current assets due from related parties $ 123,000 $ 483,000
Convertible promissory notes due to related parties 45,271,000 24,102,000
Other current liabilities due to related parties $ 399,000 $ 190,000
Convertible preferred stock, par value; $ 0.00001 $ 0.00001
Convertible preferred stock, shares authorized 409,351,021 321,346,716
Convertible preferred stock, shares issued 175,437,783 191,139,933
Convertible preferred stock, shares outstanding 175,437,783 191,139,933
Convertible preferred stock, liquidation preference $ 257,947,000 $ 258,041,000
Series 1 convertible preferred stock, $0.00001 par value $ 0.00001 $ 0.00001
Series 1 convertible preferred stock, 4,305 shares authorized 4,305 4,305
Series 1 convertible preferred stock, shares issued 2,961 2,961
Series 1 convertible preferred stock, shares outstanding 2,961 2,961
Common stock, $0.000001 par value $ 0.000001 $ 0.000001
Common stock, shares authorized 474,728,323 386,728,323
Common stock, shares issued 11,228,371 9,392,682
Common stock, shares outstanding $ 11,228,371 $ 9,392,682