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SUPPLEMENTAL FINANCIAL STATEMENT DATA (Tables) | 9 Months Ended
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Sep. 29, 2023
SUPPLEMENTAL FINANCIAL STATEMENT DATA |
Schedule of reconciliation of cash and cash equivalents, and restricted cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 29, | ​ | December 30,
​ |  | 2023 |  | 2022
​ | ​ | (in thousands)
Cash and cash equivalents | ​ | $ | 12,887 | ​ | $ | 8,806
Restricted cash | ​ |  | — | ​ |  | 10,679
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows | ​ | $ | 12,887 | ​ | $ | 19,485
Schedule of equipment and leasehold improvements | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 29, | ​ | December 30,
​ |  | 2023 |  | 2022
​ | ​ | (in thousands)
Furniture and fixtures | ​ | $ | 4,338 | ​ | $ | 4,062
Computer hardware and software | ​ |  | 42,516 | ​ |  | 35,635
Leasehold improvements | ​ |  | 3,382 | ​ |  | 3,097
Equipment under finance leases | ​ |  | 5,885 | ​ |  | 5,503
Automobiles, trucks, and field equipment | ​ |  | 3,154 | ​ |  | 3,134
Subtotal | ​ |  | 59,275 | ​ |  | 51,431
Accumulated depreciation and amortization | ​ |  | (33,115) | ​ |  | (28,894)
Equipment and leasehold improvements, net | ​ | $ | 26,160 | ​ | $ | 22,537
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 29, | ​ | December 30,
​ |  | 2023 |  | 2022
​ | ​ | (in thousands)
Accrued subcontractor costs | ​ | $ | 25,607 | ​ | $ | 28,374
Accrued bonuses | ​ | ​ | 10,534 | ​ | ​ | 8,470
Employee withholdings | ​ |  | 3,195 | ​ |  | 2,571
Compensation and payroll taxes | ​ |  | 3,858 | ​ |  | 2,340
Rebate and other | ​ | ​ | 118 | ​ | ​ | 14,643
Accrued accounting and taxes | ​ |  | 2,461 | ​ |  | 2,712
Total accrued liabilities | ​ | $ | 45,773 | ​ | $ | 59,110
Schedule of changes in the carrying value of goodwill by reporting unit | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, | ​ | Additional | ​ | Additions / | ​ | September 29,
​ |  | 2022 |  | Purchase Cost |  | Adjustments |  | 2023
​ | ​ | (in thousands)
Reporting Unit: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Energy | ​ | $ | 129,375 | ​ | $ | — | ​ | $ | — | ​ | $ | 129,375
Engineering and Consulting | ​ | ​ | 749 | ​ | ​ | 1,020 | ​ | ​ | — | ​ | ​ | 1,769
​ | ​ | $ | 130,124 | ​ | $ | 1,020 | ​ | $ | — | ​ | $ | 131,144
Schedule of gross amounts and accumulated amortization of acquired identifiable intangible assets with finite useful lives | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 29, 2023 | ​ | December 30, 2022 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Gross | ​ | Accumulated | ​ | Gross | ​ | Accumulated | ​ | Amortization
​ |  | Amount |  | Amortization |  | Amount |  | Amortization |  | Period
​ | ​ | (in thousands) | ​ | (in years)
Finite: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Backlog | ​ | $ | 8,306 | ​ | $ | 8,004 | ​ | $ | 7,944 | ​ | $ | 7,944 | ​ | 1.0
Tradename | ​ | ​ | 15,936 | ​ | ​ | 12,453 | ​ | ​ | 15,911 | ​ | ​ | 10,990 |  | 2.5 | ​ | - | ​ | 6.0
Non-compete agreements | ​ | ​ | 1,613 | ​ | ​ | 1,428 | ​ | ​ | 1,420 | ​ | ​ | 1,420 | ​ | 4.0 | ​ | - | ​ | 5.0
Developed technology | ​ | ​ | 15,810 | ​ | ​ | 14,062 | ​ | ​ | 15,810 | ​ | ​ | 11,871 | ​ | 8.0
Customer relationships | ​ | ​ | 58,149 | ​ | ​ | 29,712 | ​ | ​ | 58,149 | ​ | ​ | 25,523 | ​ | 5.0 | ​ | - | ​ | 8.0
Total intangible assets | ​ | $ | 99,814 | ​ | $ | 65,659 | ​ | $ | 99,234 | ​ | $ | 57,748 | ​ | ​ | ​ | ​ | ​ | ​

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