Related-Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,122,262	$ 1,225,415	$ 2,248,722	$ 2,005,206
Amount receivable	717,250		717,250		$ 678,210
Navarino UK And JSAT Mobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	17,000	19,300	33,800	25,400
Cash received	16,900	$ 19,200	36,200	$ 25,100
Amount receivable	$ 9,600		$ 9,600		$ 13,200