GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 29, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

The components of amortized intangible assets at December 29, 2018 and December 30, 2017 were as follows:

	December 29, 2018
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	219,508	$	132,180	13 years
Patents & Proprietary Technology	23,662		4,837		14 years
Other	7,971		6,891		5 years
	$	251,141	$	143,908

	December 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	200,810	$	131,062	13 years
Patents & Proprietary Technology	6,693		3,999		11 years
Other	8,532		7,228		5 years
	$	216,035	$	142,289

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2019	$	16,170
2020	15,082
2021	13,079
2022	10,976
2023	9,264

Schedule of non-amortized intangible assets

The carrying values of trade names at December 29, 2018 and December 30, 2017 were as follows:

(8) GOODWILL AND INTANGIBLE ASSETS (Continued)

	December 29, 2018		December 30, 2017		Year Acquired
Newmark	$	11,111	$	11,111	2004
Webforge	8,872		9,432		2010
Valmont SM	8,155		9,973		2014
Ingal EPS/Ingal Civil Products	7,233		7,690		2010
Donhad	—		5,801		2010
Shakespeare	4,000		4,000		2014
Walpar	4,300		—		2018
Convert	8,580		—		2018
Other	16,472		16,846
	$	68,723	$	64,853

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of December 29, 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	42,216			34,280			5,120			5,503			—			87,119
Impairment	—			(14,355		)	—			—			—			(14,355		)
Divestiture of grinding media	—			—			—			—			(15,814		)	(15,814		)
Foreign currency translation	(7,557		)	(910		)	(879		)	(117		)	—			(9,463		)
Balance at December 29, 2018	$	186,065		$	109,263		$	64,715		$	25,164		$	—		$	385,207

(8) GOODWILL AND INTANGIBLE ASSETS (Continued)

	Engineered Support Structures Segment			Utility Support Structures Segment		Coatings Segment			Irrigation Segment		Other		Total
Gross Balance at December 31, 2016	$	157,689		$	88,451	$	75,791		$	19,611	$	14,460	$	356,002
Accumulated impairment losses	(18,670		)	—		(16,222		)	—		—		(34,892		)
Balance at December 31, 2016	139,019			88,451		59,569			19,611		14,460		321,110
Acquisitions	3,449			—		—			—		—		3,449
Foreign currency translation	8,938			1,797		905			167		1,354		13,161
Balance at December 30, 2017	$	151,406		$	90,248	$	60,474		$	19,778	$	15,814	$	337,720