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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 31, 2026 | Oct. 31, 2025 | Mar. 31, 2026 | Dec. 31, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2026 | Mar. 31, 2025
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | $ 1,171,054 | $ 1,126,460 |  |
Inmarsat [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Contingent legal settlement escalator |  |  |  |  |  | 3.00% |  |  |
Scenario Forecast [Member] | Inmarsat [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Contingent proceeds from legal settlements | $ 100,000 | $ 420,000 | $ 16,000 | $ 16,000 | $ 16,000 |  |  | $ 568,000 |
Product [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | $ 344,684 | 305,739 |  |
Product [Member] | Defense and Advanced Technologies [Member] | Positive Outcome Of Litigation [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | 30,800 | $ 41,700 |  |
Unfavorable Regulatory Action [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
U.S. government contract-related reserves |  |  |  |  |  | $ 15,100 |  |  | $ 14,800

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