Description of Business and Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 27, 2024 USD ($)	Jun. 28, 2024 USD ($)	Mar. 29, 2024 USD ($)	Sep. 29, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 27, 2024 USD ($) operatingSegment	Sep. 29, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of operating segments | operatingSegment							1
Joint venture investment balance	$ 8,700						$ 8,700		$ 5,400
Proportionate share of income (loss)	2,000			$ (1,500)			9,000	$ 2,300
Cash, cash equivalents and restricted cash	59,857			78,259			59,857	78,259	72,651	$ 116,067
Restricted cash	2,100						2,100		$ 2,000
Total capitalized CCA implementation costs	30,000						30,000
Net income (loss)	15,051	$ (6,544)	$ 1,144	(6,400)	$ 1,799	$ (17,480)	9,651	(22,081)
Related Party
Schedule of Equity Method Investments [Line Items]
Net income (loss)	$ 0			$ 700			$ 700	$ 2,100
High Desert Support Services, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	25.00%						25.00%
J&J Maintenance
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%						50.00%
Servcore Resources and Services Solutions, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	40.00%						40.00%
Inuksuk A/S
Schedule of Equity Method Investments [Line Items]
Ownership percentage	49.00%						49.00%