Subsequent Events (Details) - Subsequent Event [Member]	Mar. 07, 2024 USD ($)
Alameda Court Approval and FCC Approval [Member]
Subsequent Events
Description of asset acquisition contingent consideration transaction	The consideration for the Transaction is payable as follows:$2,499,900 in cash within thirty (30) days of the Alameda Court Approval (payable regardless of whether Closing occurs); $7,500,000 in shares of NextNav common stock on the earlier of the FCC Approval or, if no action has been taken by the FCC, November 15, 2024 (payable regardless of whether Closing occurs); and$20,000,100 in shares of NextNav common stock within thirty (30) days of the assignment of the Licenses at Closing following the FCC Approval (the foregoing two stock payments, collectively, the “Stock Consideration”).
Progeny LMS, LLC [Member] | Telesaurus Holdings GB (“Telesaurus”) and Skybridge Spectrum Foundation (“Skybridge”) [Member]
Subsequent Events
Date of asset acquisition agreement	Mar. 07, 2024
Description of Asset Acquisition Agreement	(1) certain Multilateration Location and Monitoring Service (“M-LMS”) licenses (the “Licenses”) issued by the Federal Communications Commission (the “FCC”) and (2) rights to a petition for reconsideration, dated December 20, 2017, which, if granted, may reinstate additional M-LMS licenses owned by Skybridge and Telesaurus and terminated by the FCC in 2017, for an aggregate purchase price of up to $50,000,000 paid in the form of cash and NextNav common stock (the foregoing contemplated sale and rights, collectively, the “Transaction”).
Aggregate purchase price	$ 50,000,000
Amount of potential additional consideration	$ 20,000,000