GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jul. 01, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

he components of amortized intangible assets at July 1, 2017 and December 31, 2016 were as follows:

	July 1, 2017
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	196,201	$	121,382	13 years
Proprietary Software & Database	3,659		3,083		8 years
Patents & Proprietary Technology	6,581		3,720		11 years
Other	3,942		3,912		3 years
	$	210,383	$	132,097

(4) GOODWILL AND INTANGIBLE ASSETS (Continued)

	December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	191,316	$	111,342	13 years
Proprietary Software & Database	3,616		3,056		8 years
Patents & Proprietary Technology	6,434		3,420		11 years
Other	3,713		3,668		3 years
	$	205,079	$	121,486

Schedule of amortization expense for intangible assets

Amortization expense for intangible assets for the thirteen and twenty-six weeks ended July 1, 2017 and June 25, 2016, respectively was as follows:

Thirteen Weeks Ended		Twenty-six Weeks Ended
2017	2016	2017	2016
3,903	4,078	7,767	8,073

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2017	$	15,498
2018	13,840
2019	13,079
2020	11,989
2021	9,903

Schedule of non-amortized intangible assets

The carrying values of trade names at July 1, 2017 and December 31, 2016 were as follows:

	July 1, 2017		December 31, 2016		Year Acquired
Webforge	$	9,101	$	8,624	2010
Valmont SM	9,525		8,765		2014
Newmark	11,111		11,111		2004
Ingal EPS/Ingal Civil Products	7,420		7,032		2010
Donhad	5,598		5,305		2010
Shakespeare	4,000		4,000		2014
Industrial Galvanizers	2,323		2,201		2010
Other	14,193		13,747
	$	63,271	$	60,785

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of July 1, 2017 and December 31, 2016 was as follows:

	Engineered Support Structures Segment		Energy & Mining Segment		Utility Support Structures Segment		Coatings Segment		Irrigation Segment		Total
Balance at December 31, 2016	$	94,314	$	72,212	$	75,404	$	59,569	$	19,611	$	321,110
Foreign currency translation	2,885		4,628		—		483		602		8,598
Balance at July 1, 2017	$	97,199	$	76,840	$	75,404	$	60,052	$	20,213	$	329,708