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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 30, 2022
GOODWILL AND OTHER INTANGIBLE ASSETS |
Schedule of changes in the carrying value of goodwill by reporting unit | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | Additional | ​ | Additions / | ​ | December 30,
​ |  | 2021 |  | Purchase Cost |  | Adjustments |  | 2022
​ | ​ | (in thousands)
Reporting Unit: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Energy | ​ | $ | 129,375 | ​ | $ | — | ​ | $ | — | ​ | $ | 129,375
Engineering and Consulting | ​ | ​ | 749 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 749
​ | ​ | $ | 130,124 | ​ | $ | — | ​ | $ | — | ​ | $ | 130,124
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | January 1, | ​ | Additional | ​ | Additions / | ​ | December 31,
​ |  | 2021 |  | Purchase Cost |  | Adjustments |  | 2021
​ | ​ | (in thousands)
Reporting Unit: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Energy | ​ | $ | 129,375 | ​ | $ | — | ​ | $ | — | ​ | $ | 129,375
Engineering and Consulting | ​ | ​ | 749 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 749
​ | ​ | $ | 130,124 | ​ | $ | — | ​ | $ | — | ​ | $ | 130,124
​
Schedule of gross amounts and accumulated amortization of acquired identifiable intangible assets with finite useful lives |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, 2022 | ​ | December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Gross | ​ | Accumulated | ​ | Gross | ​ | Accumulated | ​ | Amortization
​ |  | Amount |  | Amortization |  | Amount |  | Amortization |  | Period
​ | ​ | (in thousands) | ​ | (in years)
Finite: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Backlog | ​ | $ | 7,944 | ​ | $ | 7,944 | ​ | $ | 7,944 | ​ | $ | 7,222 | ​ | 1.0
Tradename | ​ |  | 15,911 | ​ |  | 10,990 | ​ |  | 15,911 | ​ |  | 8,997 |  | 2.5 | ​ | - | ​ | 6.0
Non-compete agreements | ​ | ​ | 1,420 | ​ | ​ | 1,420 | ​ | ​ | 1,420 | ​ | ​ | 1,413 | ​ | 4.0 | ​ | - | ​ | 5.0
Developed technology | ​ | ​ | 15,810 | ​ | ​ | 11,871 | ​ | ​ | 15,500 | ​ | ​ | 8,950 | ​ | 8.0
Customer relationships | ​ | ​ | 58,149 | ​ | ​ | 25,523 | ​ | ​ | 58,149 | ​ | ​ | 19,939 | ​ | 5.0 | ​ | - | ​ | 8.0
Total finite intangible assets | ​ | ​ | 99,234 | ​ | ​ | 57,748 | ​ | ​ | 98,924 | ​ | ​ | 46,521 | ​ | ​ | ​ | ​ | ​ | ​
In-process research and technology (1) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 310 | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | ​
Total intangible assets | ​ | $ | 99,234 | ​ | $ | 57,748 | ​ | $ | 99,234 | ​ | $ | 46,521 | ​ | ​ | ​ | ​ | ​ | ​
| (1) | In-process research and technology is not amortized until put into use.
Schedule indefinite-lived intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, 2022 | ​ | December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Gross | ​ | Accumulated | ​ | Gross | ​ | Accumulated | ​ | Amortization
​ |  | Amount |  | Amortization |  | Amount |  | Amortization |  | Period
​ | ​ | (in thousands) | ​ | (in years)
Finite: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Backlog | ​ | $ | 7,944 | ​ | $ | 7,944 | ​ | $ | 7,944 | ​ | $ | 7,222 | ​ | 1.0
Tradename | ​ |  | 15,911 | ​ |  | 10,990 | ​ |  | 15,911 | ​ |  | 8,997 |  | 2.5 | ​ | - | ​ | 6.0
Non-compete agreements | ​ | ​ | 1,420 | ​ | ​ | 1,420 | ​ | ​ | 1,420 | ​ | ​ | 1,413 | ​ | 4.0 | ​ | - | ​ | 5.0
Developed technology | ​ | ​ | 15,810 | ​ | ​ | 11,871 | ​ | ​ | 15,500 | ​ | ​ | 8,950 | ​ | 8.0
Customer relationships | ​ | ​ | 58,149 | ​ | ​ | 25,523 | ​ | ​ | 58,149 | ​ | ​ | 19,939 | ​ | 5.0 | ​ | - | ​ | 8.0
Total finite intangible assets | ​ | ​ | 99,234 | ​ | ​ | 57,748 | ​ | ​ | 98,924 | ​ | ​ | 46,521 | ​ | ​ | ​ | ​ | ​ | ​
In-process research and technology (1) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 310 | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | ​
Total intangible assets | ​ | $ | 99,234 | ​ | $ | 57,748 | ​ | $ | 99,234 | ​ | $ | 46,521 | ​ | ​ | ​ | ​ | ​ | ​
| (1) | In-process research and technology is not amortized until put into use.
During the twelve months ended December 30, 2022, the Company reclassified $0.3 million of in-process research and technology to developed technology and commenced amortization over its estimated useful life.
Schedule of estimated amortization expense for acquired identifiable intangible assets | ​
​ | ​ | ​ | ​
​ | ​ | ​ | Future Intangible Asset
​ | ​ | ​ | Amortization expense
​ | ​ | ​ | (in thousands)
Fiscal year: | ​ | ​ | ​
2023 | ​ | $ | 9,928
2024 | ​ |  | 6,806
2025 | ​ |  | 6,235
2026 | ​ | ​ | 5,513
2027 | ​ | ​ | 5,513
Thereafter | ​ | ​ | 7,491
​ | ​ | $ | 41,486
​

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