Contingencies - Accrual For License Fee Dispute (Details) - License Fee Dispute - Hughes Network Systems - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Total accrual	$ 69,697	$ 80,662
Less: Payments	(19,471)	(8,451)
Additional license fees
Loss Contingencies [Line Items]
Total accrual	3,750	3,812
Penalties
Loss Contingencies [Line Items]
Total accrual	3,849	3,912
Interest and interest on penalties
Loss Contingencies [Line Items]
Total accrual	$ 81,569	$ 81,389