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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Condensed Consolidated Balance Sheets (Unaudited)    
Restricted cash $ 200,000 $ 200,000
Trade receivables, allowances 0.0 2,800,000
Receivables from related party, Allowances $ 1,000,000.0 $ 800,000
Common stock, par value per share $ 0.001 $ 0.001
Common stock, shares authorized (in thousands) 150,000,000 150,000
Common stock, shares, issued (in thousands) 61,587,000 59,562,000
Common stock, shares, outstanding (in thousands) 61,587 59,562