Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating Loss Carryforwards [Line Items]
Benefit from income taxes	$ 533	$ 22,813
Effective income tax rate	1.00%	37.00%
Increase (decrease) in gross unrecognized tax benefits	$ 73,300
Unrecognized tax benefits, Income tax penalties and interest expense	21,100
Impact on effective tax rate	16,300
Inmarsat Holdings [Member]
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits, Income tax penalties and interest expense resulting from acquisition	21,500
Unrecognized tax Benefits, Increase resulting from acquisition	$ 65,000