GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 27, 2014

GOODWILL AND INTANGIBLE ASSETS

Components of amortized intangible assets

	As of December 27, 2014
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	207,509	$	88,538	13 years
Proprietary Software & Database		3,769		2,977	8 years
Patents & Proprietary Technology		12,394		8,537	8 years
Non-compete Agreements		4,355		2,998	3 years
	$	228,027	$	103,050

	As of December 28, 2013
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	177,495	$	76,024	13 years
Proprietary Software & Database		3,896		2,896	6 years
Patents & Proprietary Technology		11,334		7,239	8 years
Non-compete Agreements		1,620		1,438	6 years
	$	194,345	$	87,597

Schedule of future estimated amortization expense

	Estimated Amortization Expense
2015	$	18,176
2016		16,406
2017		16,364
2018		14,703
2019		13,871

Non-amortized intangible assets

	December 27, 2014		December 28, 2013		Year Acquired
Webforge	$	16,801	$	17,787	2010
Valmont SM		10,818		—	2014
Newmark		11,111		11,111	2004
Ingal EPS/Ingal Civil Products		8,867		9,387	2010
Donhad		6,689		7,082	2010
Shakespeare		4,000		—	2014
Industrial Galvanizers		3,889		4,117	2010
Other		14,852		14,685
	$	77,027	$	64,169

Carrying amount of goodwill

	Engineered Infrastructure Products Segment			Utility Support Structures Segment		Coatings Segment			Irrigation Segment			Other			Total
Balance at December 28, 2013	$	175,442		$	75,404	$	77,062		$	2,420		$	19,304		$	349,632
Acquisition		32,219			—		—			17,193			—			49,562
Foreign currency translation		(10,587	)		—		(2,200	)		(77	)		(1,069	)		(14,083	)
Balance at December 27, 2014	$	197,074		$	75,404	$	74,862		$	19,536		$	18,235		$	385,111

	Engineered Infrastructure Products Segment			Utility Support Structures Segment			Coatings Segment		Irrigation Segment			Other		Total
Balance at December 29, 2012	$	155,185		$	77,141		$	77,053	$	2,517		$	18,895	$	330,791
Acquisition		21,189			—			—		—			—		21,189
Foreign currency translation		(2,669	)		—			9		(97	)		409		(2,348	)
Other		1,737			(1,737	)		—		—			—		—
Balance at December 28, 2013	$	175,442		$	75,404		$	77,062	$	2,420		$	19,304	$	349,632