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CONSOLIDATED BALANCE SHEETS) (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
CURRENT ASSETS:    
Trade accounts receivable, net of allowance $ 84 $ 66
STOCKHOLDERS' EQUITY    
Preferred stock, authorized shares 5,000,000,000 5,000,000,000
Common stock, authorized shares 30,000,000,000 30,000,000,000
Common stock, issued shares 8,621,007,000 8,416,335,000
Common stock, outstanding shares 8,621,007,000 8,416,335,000
Series A Junior Participating    
STOCKHOLDERS' EQUITY    
Preferred stock, authorized shares 200,000,000 200,000,000
Preferred stock, issued shares 0 0
Preferred stock, outstanding shares 0 0