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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2026 USD ($)	Jun. 27, 2025 USD ($)	Jul. 03, 2026 USD ($) operatingSegment	Jun. 27, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of operating segments \| operatingSegment			1
Joint venture investment balance	$ 12,100		$ 12,100		$ 10,800
Earnings from equity investment	1,400	$ 2,100	3,500	$ 2,900
Cash, cash equivalents and restricted cash	214,313	$ 190,457	214,313	$ 190,457	368,994	$ 268,321
Restricted cash	4,000		4,000		3,000
Total capitalized CCA implementation costs	$ 24,500		$ 24,500		$ 25,100
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%