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Revenue Receivables and Contract Assets and Liabilities - Summary of Company's Revenue Disaggregated by Shimmick Projects and Legacy Projects (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Disaggregation of Revenue [Line Items]
Total revenue		$ 166,035	$ 175,448	$ 376,684	$ 494,744
Shimmick Projects [Member]
Disaggregation of Revenue [Line Items]
Total revenue		101,475	109,884	275,457	301,475
Foundations Projects [Member]
Disaggregation of Revenue [Line Items]
Total revenue		10,837	11,523	25,931	40,615
Legacy Projects [Member]
Disaggregation of Revenue [Line Items]
Total revenue	[1]	$ 53,723	$ 54,041	$ 75,296	$ 152,654
[1] Legacy Projects revenue for the three and nine months ended September 27, 2024 reflects a $31 million increase to revenue as a result of the GGB Project settlement in which the Company will receive $97 million in cash and a contract change order for reduced scope of work of $6 million. See Note 12 – Subsequent Events for additional details. Legacy Projects revenue for the nine months ended September 27, 2024 also reflects a reduction to revenue of $23 million recorded during the three months ended June 28, 2024 to write off previously recorded contract assets as a result of a settlement of a claim with the United States Army Corps of Engineers.

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