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SUPPLEMENTAL FINANCIAL STATEMENT DATA (Tables) | 6 Months Ended
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Jun. 28, 2024
SUPPLEMENTAL FINANCIAL STATEMENT DATA |
Schedule of reconciliation of cash and cash equivalents, and restricted cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 28, | ​ | December 29,
​ |  | 2024 |  | 2023
​ | ​ | (in thousands)
Cash and cash equivalents | ​ | $ | 44,267 | ​ | $ | 23,397
Restricted cash | ​ |  | — | ​ |  | —
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows | ​ | $ | 44,267 | ​ | $ | 23,397
Schedule of equipment and leasehold improvements | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 28, | ​ | December 29,
​ |  | 2024 |  | 2023
​ | ​ | (in thousands)
Furniture and fixtures | ​ | $ | 4,501 | ​ | $ | 4,379
Computer hardware and software | ​ |  | 48,252 | ​ |  | 44,594
Leasehold improvements | ​ |  | 3,528 | ​ |  | 3,382
Equipment under finance leases | ​ |  | 6,494 | ​ |  | 6,139
Automobiles, trucks, and field equipment | ​ |  | 3,487 | ​ |  | 3,373
Subtotal | ​ |  | 66,262 | ​ |  | 61,867
Accumulated depreciation and amortization | ​ |  | (38,034) | ​ |  | (34,770)
Equipment and leasehold improvements, net | ​ | $ | 28,228 | ​ | $ | 27,097
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 28, | ​ | December 29,
​ |  | 2024 |  | 2023
​ | ​ | (in thousands)
Accrued subcontractor costs | ​ | $ | 25,661 | ​ | $ | 30,196
Accrued bonuses | ​ | ​ | 9,333 | ​ | ​ | 14,423
Employee withholdings | ​ |  | 3,322 | ​ |  | 3,123
Compensation and payroll taxes | ​ |  | 3,172 | ​ |  | 3,125
Rebate and other | ​ | ​ | — | ​ | ​ | 139
Accrued accounting costs and taxes | ​ |  | 3,817 | ​ |  | 3,123
Total accrued liabilities | ​ | $ | 45,305 | ​ | $ | 54,129
Schedule of changes in the carrying value of goodwill by reporting unit | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 29, | ​ | Additional | ​ | Additions / | ​ | June 28,
​ |  | 2023 |  | Purchase Cost |  | Adjustments |  | 2024
​ | ​ | (in thousands)
Reporting Unit: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Energy | ​ | $ | 129,375 | ​ | $ | — | ​ | $ | — | ​ | $ | 129,375
Engineering and Consulting | ​ | ​ | 1,769 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,769
​ | ​ | $ | 131,144 | ​ | $ | — | ​ | $ | — | ​ | $ | 131,144
Schedule of gross amounts and accumulated amortization of acquired identifiable intangible assets with finite useful lives | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 28, 2024 | ​ | December 29, 2023 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Gross | ​ | Accumulated | ​ | Gross | ​ | Accumulated | ​ | Amortization
​ |  | Amount |  | Amortization |  | Amount |  | Amortization |  | Period
​ | ​ | (in thousands) | ​ | (in years)
Finite: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Backlog | ​ | $ | 8,306 | ​ | $ | 8,238 | ​ | $ | 8,306 | ​ | $ | 8,095 | ​ | 1.0
Tradename | ​ | ​ | 15,936 | ​ | ​ | 12,977 | ​ | ​ | 15,936 | ​ | ​ | 12,695 |  | 2.5 | ​ | - | ​ | 6.0
Non-compete agreements | ​ | ​ | 1,613 | ​ | ​ | 1,464 | ​ | ​ | 1,613 | ​ | ​ | 1,440 | ​ | 4.0 | ​ | - | ​ | 5.0
Developed technology | ​ | ​ | 15,810 | ​ | ​ | 14,956 | ​ | ​ | 15,810 | ​ | ​ | 14,521 | ​ | 8.0
Customer relationships | ​ | ​ | 58,149 | ​ | ​ | 33,900 | ​ | ​ | 58,149 | ​ | ​ | 31,107 | ​ | 5.0 | ​ | - | ​ | 8.0
Total intangible assets | ​ | $ | 99,814 | ​ | $ | 71,535 | ​ | $ | 99,814 | ​ | $ | 67,858 | ​ | ​ | ​ | ​ | ​ | ​

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