Spire Global, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Additional Information (Detail)

Fair Value Measurement - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 13, 2022	Dec. 31, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Common stock per share	$ 0.0001			$ 0.0001
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 2.01
Silicon Valley Bank
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Class of warrants or right issued during period		32,412
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 1.60
Conversion of Silicon Valley Bank warrants to common stock		$ 308
Public Warrants [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Class of warrants or right issued during the period	11,499,992
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 11.50
Private Placement Warrants [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Class of warrants or right issued during the period	6,600,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 11.50
Blue Torch Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Class of Warrant or Right, Outstanding	3,496,205
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 2.01
GPO Warrant [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Class of Warrant or Right, Outstanding	198,675
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 2.01