Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Temporary Equity and Common Stockholders' Equity (Deficit) (Unaudited) (Parenthetical)

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Consolidated Statements of Temporary Equity and Common Stockholders' Equity (Deficit) (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Series C Preferred Stock [Member]    
Payments of Stock Issuance Costs $ 214  
Series B Preferred Stock [Member]    
Payments of Stock Issuance Costs   $ 41