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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% |  |  |

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