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Related-Party Transactions - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Mar. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Revenues $ 1,225,415 $ 663,559 $ 2,005,206 $ 1,238,615  
Amount receivable 664,482   664,482   $ 419,934
Navarino UK And JSAT Mobile [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Revenues 19,300   25,400    
Cash received 19,200   25,100    
Amount receivable $ 12,500   $ 12,500