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

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Stock Based Compensation - Additional Information (Detail)

v3.22.1

Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Proceeds from exercise of stock options	$ 638	$ 295
Weighted average grant-date fair value		$ 3.46
Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Purchase Price of Common Stock, Percent	85.00%
Restricted Stock Units (RSUs)
Defined Benefit Plan Disclosure [Line Items]
Weighted average grant-date fair value	$ 2.89
Unrecognized stock-based compensation expense	$ 35,931
Unrecognized stock-based compensation expense, weighted-average recognition period	2 years 8 months 4 days
Old Spire Options [Member]
Defined Benefit Plan Disclosure [Line Items]
Stockholders Equity Note Stock Split Exchange Ratio	1.8282
2021 Equity Incentive Plan [Member] \| Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Share based compensation arrangement,Number of shares available for grant under the plan	3,194,000
2021 Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs)
Defined Benefit Plan Disclosure [Line Items]
Share based compensation arrangement,Number of shares available for grant under the plan	8,863,749
2021 Equity Incentive Plan [Member] \| Common Class A [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of shares issued under share-based payment arrangement	23,951,000
Percentage of Outstanding Stock Maximum	5.00%

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