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GUARANTOR/NON-GUARANTOR FINANCIAL INFORMATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
GUARANTOR/NON-GUARANTOR FINANCIAL INFORMATION |  |  |  |  |  |  |  |  |  |  |
Parent company's percentage ownership of Guarantors | 100.00% |  |  |  |  |  |  |  | 100.00% |  |
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 697,363 | $ 678,692 | $ 682,405 | $ 698,684 | $ 714,978 | $ 680,779 | $ 712,737 | $ 637,473 | $ 2,757,144 | $ 2,745,967 | $ 2,521,676
Cost of sales |  |  |  |  |  |  |  |  | 2,098,864 | 2,064,199 | 1,865,433
Gross profit | 149,701 | 164,340 | 174,999 | 169,240 | 170,289 | 163,594 | 183,280 | 164,605 | 658,280 | 681,768 | 656,243
Selling, General And Administrative Expenses, And Goodwill And Intangible Assets Impairment |  |  |  |  |  |  |  |  | 456,000 |  |
Impairment of goodwill and intangible assets |  |  |  |  |  |  |  |  | 15,780 | 0 | 0
Operating income |  |  |  |  |  |  |  |  | 202,280 | 267,080 | 245,374
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (44,237) | (44,645) | (44,409)
Interest income |  |  |  |  |  |  |  |  | (4,668) | (4,737) | (3,105)
Costs associated with refinancing of debt |  |  |  |  |  |  |  |  | (14,820) | 0 | 0
Other |  |  |  |  |  |  |  |  | (19,270) | 1,292 | 16,384
Total other income (expenses) |  |  |  |  |  |  |  |  | (58,839) | (38,616) | (24,920)
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 143,441 | 228,464 | 220,454
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 44,794 | 66,390 | 65,748
Deferred income taxes |  |  |  |  |  |  |  |  | (1,659) | 39,755 | (23,685)
Total income tax expense (benefit) |  |  |  |  |  |  |  |  | 43,135 | 106,145 | 42,063
Earnings before equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 100,306 | 122,319 | 178,391
Equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net earnings |  |  |  |  |  |  |  |  | 100,306 | 122,319 | 178,391
Less: Earnings attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (5,955) | (6,079) | (5,159)
Net earnings attributable to Valmont Industries, Inc. | $ 17,662 | $ 4,448 | $ 32,960 | $ 39,281 | $ (3,611) | $ 35,208 | $ 45,664 | $ 38,979 | 94,351 | 116,240 | 173,232
Eliminations |  |  |  |  |  |  |  |  |  |  |
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (260,679) | (251,876) | (191,877)
Cost of sales |  |  |  |  |  |  |  |  | (262,448) | (252,182) | (190,716)
Gross profit |  |  |  |  |  |  |  |  | 1,769 | 306 | (1,161)
Selling, General And Administrative Expenses, And Goodwill And Intangible Assets Impairment |  |  |  |  |  |  |  |  | 0 |  |
Operating income |  |  |  |  |  |  |  |  | 1,769 | 306 | (1,161)
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | 14,815 | 13,866 | 0
Interest income |  |  |  |  |  |  |  |  | (14,815) | 13,866 | 0
Other |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total other income (expenses) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 1,769 | 306 | (1,161)
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 246 | 135 | (323)
Deferred income taxes |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total income tax expense (benefit) |  |  |  |  |  |  |  |  | 246 | 135 | (323)
Earnings before equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 1,523 | 171 | (838)
Equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | (105,687) | (106,023) | (207,189)
Net earnings |  |  |  |  |  |  |  |  | (104,164) | (105,852) | (208,027)
Less: Earnings attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net earnings attributable to Valmont Industries, Inc. |  |  |  |  |  |  |  |  | (104,164) | (105,852) | (208,027)
Parent |  |  |  |  |  |  |  |  |  |  |
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,192,134 | 1,200,181 | 1,126,985
Cost of sales |  |  |  |  |  |  |  |  | 906,646 | 898,799 | 837,616
Gross profit |  |  |  |  |  |  |  |  | 285,488 | 301,382 | 289,369
Selling, General And Administrative Expenses, And Goodwill And Intangible Assets Impairment |  |  |  |  |  |  |  |  | 192,343 |  |
Operating income |  |  |  |  |  |  |  |  | 93,145 | 109,200 | 104,876
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (42,524) | (43,642) | (43,703)
Interest income |  |  |  |  |  |  |  |  | (791) | (838) | (273)
Other |  |  |  |  |  |  |  |  | (17,602) | 5,681 | 1,480
Total other income (expenses) |  |  |  |  |  |  |  |  | (59,335) | (37,123) | (41,950)
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 33,810 | 72,077 | 62,926
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 6,310 | 29,407 | 24,539
Deferred income taxes |  |  |  |  |  |  |  |  | 1,532 | 10,307 | 6,216
Total income tax expense (benefit) |  |  |  |  |  |  |  |  | 7,842 | 39,714 | 30,755
Earnings before equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 25,968 | 32,363 | 32,171
Equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 68,383 | 83,877 | 141,061
Net earnings |  |  |  |  |  |  |  |  | 94,351 | 116,240 | 173,232
Less: Earnings attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net earnings attributable to Valmont Industries, Inc. |  |  |  |  |  |  |  |  | 94,351 | 116,240 | 173,232
Guarantors |  |  |  |  |  |  |  |  |  |  |
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 522,366 | 485,448 | 390,756
Cost of sales |  |  |  |  |  |  |  |  | 399,451 | 375,383 | 285,924
Gross profit |  |  |  |  |  |  |  |  | 122,915 | 110,065 | 104,832
Selling, General And Administrative Expenses, And Goodwill And Intangible Assets Impairment |  |  |  |  |  |  |  |  | 51,127 |  |
Operating income |  |  |  |  |  |  |  |  | 71,788 | 62,110 | 58,588
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (14,815) | (13,866) | (10)
Interest income |  |  |  |  |  |  |  |  | (82) | (42) | (112)
Other |  |  |  |  |  |  |  |  | 59 | 58 | 77
Total other income (expenses) |  |  |  |  |  |  |  |  | (14,674) | (13,766) | 179
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 57,114 | 48,344 | 58,767
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 14,948 | 17,928 | 20,270
Deferred income taxes |  |  |  |  |  |  |  |  | 1,791 | 0 | 0
Total income tax expense (benefit) |  |  |  |  |  |  |  |  | 16,739 | 17,928 | 20,270
Earnings before equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 40,375 | 30,416 | 38,497
Equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 37,304 | 22,146 | 66,128
Net earnings |  |  |  |  |  |  |  |  | 77,679 | 52,562 | 104,625
Less: Earnings attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net earnings attributable to Valmont Industries, Inc. |  |  |  |  |  |  |  |  | 77,679 | 52,562 | 104,625
Non- Guarantors |  |  |  |  |  |  |  |  |  |  |
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,303,323 | 1,312,214 | 1,195,812
Cost of sales |  |  |  |  |  |  |  |  | 1,055,215 | 1,042,199 | 932,609
Gross profit |  |  |  |  |  |  |  |  | 248,108 | 270,015 | 263,203
Selling, General And Administrative Expenses, And Goodwill And Intangible Assets Impairment |  |  |  |  |  |  |  |  | 212,530 |  |
Operating income |  |  |  |  |  |  |  |  | 35,578 | 95,464 | 83,071
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (1,713) | (1,003) | (696)
Interest income |  |  |  |  |  |  |  |  | (18,610) | (17,723) | (2,720)
Other |  |  |  |  |  |  |  |  | (1,727) | (4,447) | 14,827
Total other income (expenses) |  |  |  |  |  |  |  |  | 15,170 | 12,273 | 16,851
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 50,748 | 107,737 | 99,922
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 23,290 | 18,920 | 21,262
Deferred income taxes |  |  |  |  |  |  |  |  | (4,982) | 29,448 | (29,901)
Total income tax expense (benefit) |  |  |  |  |  |  |  |  | 18,308 | 48,368 | (8,639)
Earnings before equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 32,440 | 59,369 | 108,561
Equity in earnings of nonconsolidated subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net earnings |  |  |  |  |  |  |  |  | 32,440 | 59,369 | 108,561
Less: Earnings attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (5,955) | (6,079) | (5,159)
Net earnings attributable to Valmont Industries, Inc. |  |  |  |  |  |  |  |  | $ 26,485 | $ 53,290 | $ 103,402

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