Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Share - Schedule of Earnings Per Share Basic and Diluted Attributable to Common Stockholders (Detail)

v3.21.2
Net Loss per Share - Schedule of Earnings Per Share Basic and Diluted Attributable to Common Stockholders (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Numerator:        
Net loss attributable to common stockholders $ (32,701) $ (7,624) $ (79,261) $ (22,340)
Denominator:        
Weighted-average shares of New Spire Class A Common Stock used in computing basic and diluted net loss per share 67,348,269 17,605,469 37,389,424 17,603,874
Basic and diluted net loss per share (New Spire Class A Common Stock) $ (0.49) $ (0.43) $ (2.12) $ (1.27)