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BUSINESS COMBINATIONS - Pro Forma Information - Tabular Disclosure (Details) - Alternative Power Generation, Inc., Alternative Power Generation, Inc., and Enica Engineering, PLLC - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 04, 2025 | Jun. 28, 2024 | Jul. 04, 2025 | Jun. 28, 2024
Business Acquisition, Pro Forma Information |  |  |  |
Pro forma revenue | $ 173,473 | $ 153,771 | $ 329,730 | $ 289,138
Pro forma income (loss) from operations | 11,815 | 8,708 | 18,600 | 16,700
Pro forma net income (loss) | $ 15,434 | $ 6,562 | $ 19,793 | $ 11,550
Earnings (loss) per share, basic (in dollars per share) | $ 1.07 | $ 0.48 | $ 1.38 | $ 0.85
Earnings (loss) per share, diluted (in dollars per share) | $ 1.03 | $ 0.47 | $ 1.34 | $ 0.82
Weighted average shares outstanding, basic (in shares) | 14,444 | 13,725 | 14,298 | 13,665
Weighted average shares outstanding, diluted (in shares) | 14,917 | 14,074 | 14,778 | 14,001

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