GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 28, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

The components of amortized intangible assets at September 28, 2019 and December 29, 2018 were as follows:

	September 28, 2019
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	236,029	$	143,306	13 years
Patents & Proprietary Technology	22,936		5,945		14 years
Other	7,494		6,886		5 years
	$	266,459	$	156,137

	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

Schedule of amortization expense for intangible assets

Amortization expense for intangible assets for the thirteen and thirty-nine weeks ended September 28, 2019 and September 29, 2018, respectively was as follows:

Thirteen weeks ended				Thirty-nine weeks ended
2019		2018		2019		2018
$	4,484	$	3,721	$	13,506	$	11,176

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2019	$	17,687
2020	17,821
2021	15,523
2022	13,286
2023	11,594

Schedule of non-amortized intangible assets

at September 28, 2019 and December 29, 2018 are as follows:

	September 28, 2019		December 29, 2018		Year Acquired
Newmark	$	11,111	$	11,111	2004
Webforge	8,587		8,872		2010
Convert Italia S.p.A	8,203		8,580		2018
Valmont SM	7,799		8,155		2014
Ingal EPS/Ingal Civil Products	7,001		7,233		2010
Walpar	3,500		4,300		2018
Shakespeare	4,000		4,000		2014
Other	17,211		16,472
	$	67,412	$	68,723

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of September 28, 2019 and December 29, 2018 was as follows:

	Engineered Support Structures Segment			Utility Support Structures Segment			Coatings Segment			Irrigation Segment		Total
Gross Balance December 29, 2018	$	204,735		$	123,618		$	80,937		$	25,164	$	434,454
Accumulated impairment losses	(18,670		)	(14,355		)	(16,222		)	—		(49,247		)
Balance at December 29, 2018	186,065			109,263			64,715			25,164		385,207
Acquisitions	21,043			7,889			11,715			—		40,647
Foreign currency translation	(2,652		)	(1,758		)	(133		)	368		(4,175		)
Balance at September 28, 2019	$	204,456		$	115,394		$	76,297		$	25,532	$	421,679