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ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands | Aug. 10, 2022 | Jun. 01, 2022 | May 10, 2022 | Apr. 01, 2023 | Dec. 31, 2022
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Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 741,735 | $ 739,861
Non-controlling interest in consolidated subsidiaries |  |  |  | $ 58,301 | $ 60,865
Conceal Fab |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash paid to acquire business |  | $ 39,287 |  |  |
Percentage acquired |  | 51.00% |  |  |
Current assets |  | $ 21,133 |  |  |
Property, plant, and equipment acquired |  | 3,813 |  |  |
Other assets |  | 9,108 |  |  |
Goodwill |  | 42,465 |  |  |
Total fair value of assets acquired |  | 107,719 |  |  |
Current Liabilities |  | 6,658 |  |  |
Long-term debt |  | 2,038 |  |  |
Operating lease liabilities |  | 7,812 |  |  |
Deferred income taxes |  | 5,464 |  |  |
Other noncurrent liabilities |  | 12 |  |  |
Total fair value of liabilities assumed |  | 21,984 |  |  |
Non-controlling interest in consolidated subsidiaries |  | 41,693 |  |  |
Net assets acquired |  | 44,042 |  |  |
Contingent consideration liability, current |  | 1,850 |  |  |
Convert |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage acquired | 9.00% |  |  |  |
Consideration transferred | $ 3,046 |  |  |  |
Valmont West Coast Engineering |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage acquired |  |  | 20.00% |  |
Consideration transferred |  |  | $ 4,292 |  |
Customer Relationships | Conceal Fab |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets |  | 26,200 |  |  |
Trade Name | Conceal Fab |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets |  | $ 5,000 |  |  |

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