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Fair Value Measurements - Redeemable Convertible Series E preferred forward contract liability (Details) - Redeemable Series E Convertible Preferred Stock - Valuation Technique, Discounted Cash Flow - Level 3
Sep. 10, 2020
USD ($)
$ / shares
Derivative Assets (Liabilities), at Fair Value, Net | $ $ 21,688
Share Price | $ / shares $ 9.17