GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

he components of amortized intangible assets at June 30, 2018 and December 30, 2017 were as follows:

	June 30, 2018
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	188,767	$	126,904	13 years
Proprietary Software & Database	3,589		3,075		8 years
Patents & Proprietary Technology	7,225		4,238		11 years
Other	4,496		3,789		3 years
	$	204,077	$	138,006

	December 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	200,810	$	131,062	13 years
Proprietary Software & Database	3,671		3,107		8 years
Patents & Proprietary Technology	6,693		3,999		11 years
Other	4,861		4,121		3 years
	$	216,035	$	142,289

Schedule of amortization expense for intangible assets

Amortization expense for intangible assets for the thirteen and twenty-six weeks ended June 30, 2018 and July 1, 2017, respectively was as follows:

Thirteen Weeks Ended		Twenty-six Weeks Ended
2018	2017	2018	2017
3,572	3,903	7,455	7,767

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2018	$	14,187
2019	12,903
2020	11,804
2021	9,748
2022	7,573

Schedule of non-amortized intangible assets

The carrying values of trade names at June 30, 2018 and December 30, 2017 were as follows:

	June 30, 2018		December 30, 2017		Year Acquired
Newmark	$	11,111	$	11,111	2004
Valmont SM	9,717		9,973		2014
Webforge	9,230		9,432		2010
Ingal EPS/Ingal Civil Products	7,526		7,690		2010
Shakespeare	4,000		4,000		2014
Other	16,894		22,647
	$	58,478	$	64,853

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of June 30, 2018 and December 30, 2017 was as follows:

	Engineered Support Structures Segment			Utility Support Structures Segment			Coatings Segment			Irrigation Segment			Other			Total
Gross Balance at December 30, 2017	$	170,076		$	90,248		$	76,696		$	19,778		$	15,814		$	372,612
Accumulated impairment losses	(18,670		)	—			(16,222		)	—			—			(34,892		)
Balance at December 30, 2017	$	151,406		$	90,248		$	60,474		$	19,778		$	15,814		$	337,720
Acquisitions	—			—			—			3,922			—			3,922
Divestiture of grinding media	—			—			—			—			(15,814		)	(15,814		)
Foreign currency translation	(3,443		)	(380		)	(527		)	(116		)	—			(4,466		)
Balance at June 30, 2018	$	147,963		$	89,868		$	59,947		$	23,584		$	—		$	321,362