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SUPPLEMENTAL FINANCIAL STATEMENT DATA (Tables) | 6 Months Ended
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Jul. 04, 2025
SUPPLEMENTAL FINANCIAL STATEMENT DATA |
Schedule of reconciliation of cash and cash equivalents, and restricted cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | July 4, | ​ | December 27,
​ |  | 2025 |  | 2024
​ | ​ | (in thousands)
Cash and cash equivalents | ​ | $ | 32,348 | ​ | $ | 74,158
Restricted cash | ​ |  | — | ​ |  | —
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows | ​ | $ | 32,348 | ​ | $ | 74,158
Schedule of equipment and leasehold improvements | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | July 4, | ​ | December 27,
​ |  | 2025 |  | 2024
​ | ​ | (in thousands)
Furniture and fixtures | ​ | $ | 4,588 | ​ | $ | 4,594
Computer hardware and software | ​ |  | 56,164 | ​ |  | 51,904
Leasehold improvements | ​ |  | 3,913 | ​ |  | 3,804
Equipment under finance leases | ​ |  | 7,231 | ​ |  | 7,052
Automobiles, trucks, and field equipment | ​ |  | 3,733 | ​ |  | 3,608
Subtotal | ​ |  | 75,629 | ​ |  | 70,962
Accumulated depreciation and amortization | ​ |  | (44,728) | ​ |  | (41,428)
Equipment and leasehold improvements, net | ​ | $ | 30,901 | ​ | $ | 29,534
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | July 4, | ​ | December 27,
​ |  | 2025 |  | 2024
​ | ​ | (in thousands)
Accrued subcontractor costs | ​ | $ | 30,594 | ​ | $ | 33,061
Accrued bonuses | ​ | ​ | 15,703 | ​ | ​ | 18,277
Employee withholdings | ​ |  | 5,031 | ​ |  | 3,664
Compensation and payroll taxes | ​ |  | 4,899 | ​ |  | 3,564
Rebate and other | ​ | ​ | — | ​ | ​ | 360
Accrued accounting costs and taxes | ​ |  | 3,424 | ​ |  | 3,850
Total accrued liabilities | ​ | $ | 59,651 | ​ | $ | 62,776
Schedule of changes in the carrying value of goodwill by reporting unit | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 27, | ​ | Additional | ​ | Additions / | ​ | July 4,
​ |  | 2024 |  | Purchase Cost |  | Adjustments |  | 2025
​ | ​ | (in thousands)
Reporting Unit: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Energy | ​ | $ | 139,222 | ​ | $ | 33,506 | ​ | $ | — | ​ | $ | 172,728
Engineering and Consulting | ​ | ​ | 1,769 | ​ | ​ | 7,879 | ​ | ​ | — | ​ | ​ | 9,648
​ | ​ | $ | 140,991 | ​ | $ | 41,385 | ​ | $ | — | ​ | $ | 182,376
Schedule of gross amounts and accumulated amortization of acquired identifiable intangible assets with finite useful lives | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | July 4, 2025 | ​ | December 27, 2024 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Gross | ​ | Accumulated | ​ | Gross | ​ | Accumulated | ​ | Amortization
​ |  | Amount |  | Amortization |  | Amount |  | Amortization |  | Period
​ | ​ | (in thousands) | ​ | (in years)
Finite: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Backlog | ​ | $ | 11,804 | ​ | $ | 8,924 | ​ | $ | 8,882 | ​ | $ | 8,350 | ​ | 1.0
Tradename | ​ | ​ | 18,080 | ​ | ​ | 14,809 | ​ | ​ | 16,123 | ​ | ​ | 13,196 |  | 2.5 | ​ | - | ​ | 6.0
Non-compete agreements | ​ | ​ | 1,613 | ​ | ​ | 1,512 | ​ | ​ | 1,613 | ​ | ​ | 1,488 | ​ | 4.0 | ​ | - | ​ | 5.0
Developed technology | ​ | ​ | 15,810 | ​ | ​ | 15,615 | ​ | ​ | 15,810 | ​ | ​ | 15,286 | ​ | 8.0
Customer relationships | ​ | ​ | 67,766 | ​ | ​ | 40,094 | ​ | ​ | 62,041 | ​ | ​ | 36,735 | ​ | 5.0 | ​ | - | ​ | 12.0
Total intangible assets | ​ | $ | 115,073 | ​ | $ | 80,954 | ​ | $ | 104,469 | ​ | $ | 75,055 | ​ | ​ | ​ | ​ | ​ | ​

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