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

Quarterly report [Sections 13 or 15(d)]

Fair Value Measurement - Additional Information (Details)

Fair Value Measurement - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended
	Apr. 08, 2026	Mar. 12, 2025	Jun. 13, 2022	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025	Jun. 11, 2025	Jun. 10, 2025	May 30, 2025	Sep. 27, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Change in fair value of warrant liabilities				$ (167)	$ (51)	$ 110	$ (3,098)
Common Class A
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Common stock, issued (in shares)				39,250,648		39,250,648		33,107,807		156,249
Common stock par value (in dollars per share)				$ 0.0001		$ 0.0001		$ 0.0001		$ 0.0001
Common Class A \| Private Placement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Common stock, sale of stock (in shares)	5,000,000	4,843,750
Purchase price (in dollars per share)	$ 14.00	$ 8.00
Blue Torch Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrants exercise price (in dollars per share)									$ 5.44		$ 5.44
Warrants exercised (in shares)									208,483		825,623
Blue Torch Warrants \| Common Class A
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Stock price (in dollars per share)									$ 11.83		$ 10.66
Common stock, issued (in shares)									112,611		404,286
2022 Blue Torch Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Outstanding warrants (in shares)			437,024
Warrants exercise price (in dollars per share)			$ 16.08									$ 5.44
2023 Blue Torch Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Outstanding warrants (in shares)												597,082
Warrants exercise price (in dollars per share)												$ 5.44
Urgent Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Outstanding warrants (in shares)			24,834	24,834		24,834
Warrants exercise price (in dollars per share)			$ 16.08									$ 16.08
Cash to issue warrants			$ 600
Pre Funded Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Outstanding warrants (in shares)										156,250
Pre Funded Warrants \| Private Placement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrants exercise price (in dollars per share)		$ 0.0001
Common stock, sale of stock (in shares)		156,250
Purchase price (in dollars per share)		$ 7.9999