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Revenues - Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Disaggregation of Revenue [Line Items] |  |
Unbilled receivable | $ 26,871 | $ 23,516
ASUS |  |
Disaggregation of Revenue [Line Items] |  |
Unbilled receivable | 9,172 | 9,693
Receivable from the U.S. government | 83,282 | 91,489
Contract assets | 20,593 | 14,378
Contract liabilities | $ 3,649 | $ 1,352

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