Summary of Significant Accounting Policies (Details) $ in Thousands	1 Months Ended		12 Months Ended
	May 31, 2024 shares	Oct. 31, 2023 shares	Dec. 31, 2025 USD ($) Item	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Summary of Significant Accounting Policies [Line Items]
Gains from fair value changes from FVO available-for-sale debt securities			$ 5,400	$ 900
Allowances for doubtful accounts			0	0
Development costs			500	500
Finite-Lived Intangible Asset, Amortization			1,500	1,200
Accounts receivable			2,300	3,300
Contract liabilities			$ 491	288
Number of segment | Item			1
Number of reporting units | Item			1
Goodwill impairment			$ 0	0
Indefinite-lived license agreements with federal government, term			10 years
Indefinite-lived license agreements with federal government, renewal term			10 years
Stock issued during period for redemption of non-controlling interests				(67)
Depreciation, Nonproduction			$ 2,500
Pinnacle And PNT Network Assets [Member]
Summary of Significant Accounting Policies [Line Items]
Asset Retirement Obligation, Period Increase (Decrease)				0
Software [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Finite-Lived Intangible Asset, Amortization			$ 800	700
Non-controlling Interest
Summary of Significant Accounting Policies [Line Items]
Stock issued during period for redemption of non-controlling interests				1,362
Non-controlling Interest | NextNav France [Member]
Summary of Significant Accounting Policies [Line Items]
Stock issued during period for redemption of non-controlling interests, shares | shares	397,037	591,658
Stock issued during period for redemption of non-controlling interests				$ 1,400	$ 2,500