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Supplemental balance sheet and cash flow information (revenue in excess of billings) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Revenue in excess of billings |  |  |
Conditional right to receive consideration |  | $ 21,239 | $ 16,943
Unconditional right to receive consideration | [1] | 13,950 | 9,798
Revenue in excess of billings |  | $ 35,189 | $ 26,741
[1] | Represents revenues that are earned but not currently billable under the related contract terms.

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 912 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478345/912-310-45-2 + Details
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