GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 24, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

he components of amortized intangible assets at September 24, 2016 and December 26, 2015 were as follows:

	September 24, 2016
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	195,371	$	109,595	13 years
Proprietary Software & Database	3,658		3,056		8 years
Patents & Proprietary Technology	6,998		3,831		11 years
Other	3,886		3,829		3 years
	$	209,913	$	120,311

	December 26, 2015
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	201,801	$	101,614	13 years
Proprietary Software & Database	3,571		2,966		8 years
Patents & Proprietary Technology	6,815		3,421		11 years
Other	3,752		3,671		3 years
	$	215,939	$	111,672

Schedule of amortization expense for intangible assets

Amortization expense for intangible assets for the thirteen and thirty-nine weeks ended September 24, 2016 and September 26, 2015, respectively was as follows:

Thirteen Weeks Ended				Thirty-nine Weeks Ended
2016		2015		2016		2015
$	3,964	$	4,507	$	12,037	$	14,157

Schedule of future estimated amortization expense

Estimated annual amortization expense related to finite‑lived intangible assets is as follows:

	Estimated Amortization Expense
2016	$	15,895
2017	15,390
2018	13,764
2019	12,994
2020	11,945

Schedule of non-amortized intangible assets

The carrying values of trade names at September 24, 2016 and December 26, 2015 were as follows:

	September 24, 2016		December 26, 2015		Year Acquired
Webforge	$	9,061	$	10,430	2010
Valmont SM	9,333		8,919		2014
Newmark	11,111		11,111		2004
Ingal EPS/Ingal Civil Products	7,387		8,504		2010
Donhad	5,573		6,415		2010
Shakespeare	4,000		4,000		2014
Industrial Galvanizers	2,313		2,662		2010
Other	14,089		13,889
	$	62,867	$	65,930

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of September 24, 2016 and December 26, 2015 was as follows:

	Engineered Support Structures Segment			Energy & Mining Segment			Utility Support Structures Segment		Coatings Segment			Irrigation Segment		Total
Gross goodwill at December 26, 2015	$	101,275		$	99,829		$	75,404	$	75,941		$	19,359	$	371,808
Accumulated impairment losses	—			(18,670		)	—		(16,222		)	—		(34,892		)
Balance at December 26, 2015	$	101,275		$	81,159		$	75,404	$	59,719		$	19,359	$	336,916
Foreign currency translation	(4,559		)	(4,968		)	—		163			311		(9,053		)
Balance at September 24, 2016	$	96,716		$	76,191		$	75,404	$	59,882		$	19,670	$	327,863