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GOODWILL AND INTANGIBLE ASSETS - Carrying Values of Trade Names - (Details) - USD ($) $ in Thousands | Sep. 26, 2015 | Dec. 27, 2014
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Webforge |  |
Non-amortized intangible assets |  |
Carrying value of trade names | $ 11,477 | $ 16,801
Valmont SM |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 9,284 | 10,818
Newmark |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 11,111 | 11,111
Ingal EPS/Ingal Civil Products |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 8,668 | 8,867
Donhad |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 6,539 | 6,689
Shakespeare |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 4,000 | 4,000
Industrial Galvanizers |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 2,713 | 3,889
Other |  |
Non-amortized intangible assets |  |
Carrying value of trade names | 13,567 | 14,852
Trade Names |  |
Non-amortized intangible assets |  |
Carrying value of trade names | $ 67,359 | $ 77,027

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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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