GOODWILL AND INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

The components of amortized intangible assets at March 30, 2019 and December 29, 2018 were as follows:

	March 30, 2019
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	240,786	$	136,961	13 years
Patents & Proprietary Technology	23,396		5,232		14 years
Other	7,918		6,887		5 years
	$	272,100	$	149,080

	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 weeks ended March 30, 2019 and March 31, 2018, respectively was as follows:

Thirteen Weeks Ended
2019		2018
$	4,390	$	3,883

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2019	$	18,238
2020	17,404
2021	15,378
2022	13,228
2023	11,483

Schedule of non-amortized intangible assets

The carrying values of trade names at March 30, 2019 and December 29, 2018 were as follows:

	March 30, 2019		December 29, 2018		Year Acquired
Newmark	$	11,111	$	11,111	2004
Webforge	9,105		8,872		2010
Convert Italia S.p.A	8,414		8,580		2018
Valmont SM	7,999		8,155		2015
Ingal EPS/Ingal Civil Products	7,423		7,233		2010
Walpar	4,300		4,300		2018
Shakespeare	4,000		4,000		2014
Other	17,525		16,472
	$	69,877	$	68,723

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of March 30, 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	14,494			—			15,720			—		30,214
Foreign currency translation	1,930			(710		)	300			55		1,575
Balance at March 30, 2019	$	202,489		$	108,553		$	80,735		$	25,219	$	416,996