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Preferred Stock and Convertible Preferred Stock (Tables)
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of Stock by Class
December 31, 2020
Shares
Authorized
Shares Issued
and
Outstanding  
Net Carrying
Value
Aggregate
Liquidation
Preference 
( In thousands)
Series A15,483,330 15,483,318 $6,081 $6,107 
Series B12,180,448 12,180,443 10,642 10,975 
Series B-18,382,809 8,382,807 9,927 10,000 
Series C15,583,719 15,583,713 37,923 38,000 
Series D33,334,113 31,643,142 111,302 112,732 
Series D-14,317,726 548,032 2,158 2,158 
Series E27,624,259 27,624,249 130,945 131,311 
Series F10,190,666 9,906,980 76,247 76,558 
127,097,070 121,352,684 $385,225 $387,841