Spire Global, Inc. Quarterly report [Sections 13 or 15(d)]

Fair Value Measurement - Additional Information (Detail)

Fair Value Measurement - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
	Mar. 21, 2024	Jun. 30, 2024	Jun. 30, 2023	Sep. 27, 2023	Jun. 13, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price				$ 5.44
Class of Warrant or Right, Outstanding				597,082
Proceeds from issuance of common stock under the Equity Distribution Agreement, net		$ 0	$ 7,866
Warrant exercised		$ 0
Securities Purchase Agreement Warrants Member
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price	$ 14.5	$ 14.5
Securities Purchase Agreement Warrants Member \| Common Class A [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price	$ 14
Aggregate offering shares	2,142,858
Class of Warrant or Right, Outstanding	2,142,858
Proceeds from issuance of common stock under the Equity Distribution Agreement, net	$ 30,000
2022 Blue Torch Warrants Member
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price					$ 16.08
Class of Warrant or Right, Outstanding					437,024
2022 Blue Torch Warrants Member \| Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price				$ 16.08
2022 Blue Torch Warrants Member \| Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price				$ 5.44
Warrant to urgent capital llc [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrant exercise price					$ 16.08
Class of Warrant or Right, Outstanding					24,834