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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenues (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 25, 2021 | Sep. 26, 2020 | Sep. 25, 2021 | Sep. 26, 2020 | Dec. 26, 2020
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | $ 868,782 | $ 733,970 | $ 2,538,297 | $ 2,096,978 |
Contract assets | 155,417 |  | 155,417 |  | $ 123,495
Contract liabilities | 203,198 |  | 203,198 |  | 170,919
Contract liabilities, current | 138,286 |  | 138,286 |  | $ 130,018
Revenue recognized from contract liability | 18,981 | 16,333 | 88,350 | 55,610 |
Remaining performance obligations | $ 124,767 |  | $ 124,767 |  |
Minimum |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Remaining performance obligations, expected timing of satisfaction period | 12 months |  | 12 months |  |
Maximum |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Remaining performance obligations, expected timing of satisfaction period | 24 months |  | 24 months |  |
Contract Liabilities |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Contract liabilities, current | $ 138,286 |  | $ 138,286 |  |
Other Noncurrent Liabilities |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Contract liabilities, noncurrent | 64,912 |  | 64,912 |  |
Transferred at Point in Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 589,290 | 490,769 | 1,727,295 | 1,385,005 |
Transferred over Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 279,492 | 243,201 | 811,002 | 711,973 |
Utility Support Structures Segment |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 276,502 | 272,479 | 797,063 | 723,900 |
Utility Support Structures Segment | Transferred at Point in Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 12,834 | 43,287 | 28,255 | 56,830 |
Utility Support Structures Segment | Transferred over Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 263,668 | 229,192 | 768,808 | 667,070 |
Engineered Support Structures Segment |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 281,049 | 254,945 | 772,545 | 731,184 |
Engineered Support Structures Segment | Transferred at Point in Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 271,277 | 244,785 | 745,125 | 697,491 |
Engineered Support Structures Segment | Transferred over Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 9,772 | 10,160 | 27,420 | 33,693 |
Coatings Segment |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 74,906 | 68,698 | 224,102 | 199,955 |
Coatings Segment | Transferred at Point in Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 74,906 | 68,698 | 224,102 | 199,955 |
Coatings Segment | Transferred over Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 0 | 0 | 0 | 0 |
Irrigation Segment |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 236,325 | 137,848 | 744,587 | 441,939 |
Irrigation Segment | Transferred at Point in Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | 230,273 | 133,999 | 729,813 | 430,729 |
Irrigation Segment | Transferred over Time |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue from contract with customer | $ 6,052 | $ 3,849 | $ 14,774 | $ 11,210 |

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