GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 25, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

he components of amortized intangible assets at June 25, 2016 and December 26, 2015 were as follows:

	June 25, 2016
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	198,175	$	107,359	13 years
Proprietary Software & Database	3,632		3,031		8 years
Patents & Proprietary Technology	6,922		3,687		11 years
Other	3,856		3,790		3 years
	$	212,585	$	117,867

(4) GOODWILL AND INTANGIBLE ASSETS (Continued)

	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 twenty-six weeks ended June 25, 2016 and June 27, 2015, respectively was as follows:

Thirteen Weeks Ended				Twenty-six Weeks Ended
2016		2015		2016		2015
$	4,078	$	4,737	$	8,073	$	9,650

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2016	$	15,906
2017	15,624
2018	13,990
2019	13,209
2020	12,158

Schedule of non-amortized intangible assets

The carrying values of trade names at June 25, 2016 and December 26, 2015 were as follows:

	June 25, 2016		December 26, 2015		Year Acquired
Webforge	$	9,545	$	10,430	2010
Valmont SM	9,246		8,919		2014
Newmark	11,111		11,111		2004
Ingal EPS/Ingal Civil Products	7,781		8,504		2010
Donhad	5,870		6,415		2010
Shakespeare	4,000		4,000		2014
Industrial Galvanizers	2,436		2,662		2010
Other	14,107		13,889
	$	64,096	$	65,930

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of June 25, 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	(2,589		)	(3,200		)	—		411			65		(5,313		)
Balance at June 25, 2016	$	98,686		$	77,959		$	75,404	$	60,130		$	19,424	$	331,603