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Net Loss Per Share - Schedule of Calculation of Basic and Diluted Net Loss per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Numerator:        
Net loss for basic and diluted earnings per common share $ (54,974) $ (30,591) $ (46,689) $ (37,713)
Unpaid cumulative dividends on preferred stock (28,925) (27,068) (36,758) (31,291)
Net loss allocated to common shareholders $ (83,899) $ (57,659) $ (83,447) $ (69,004)
Denominator:        
Weighted-average shares used in calculating net loss per share, basic and diluted (in shares) 2,108,472,000 1,909,635,000 1,959,165,000 1,629,821,000
Weighted-average shares used in calculating net loss per share, diluted (in shares) 2,108,472,000 1,909,635,000 1,959,165,000 1,629,821,000
Net loss per common share - basic (usd per share) $ (39,790) $ (30,190) $ (42.59) $ (42.34)
Net loss per common share - diluted (usd per share) $ (39,790) $ (30,190) $ (42.59) $ (42.34)