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

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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