GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of components of amortized intangible assets

he components of amortized intangible assets at September 30, 2017 and December 31, 2016 were as follows:

	September 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	200,269	$	126,845	13 years
Proprietary Software & Database	3,687		3,111		8 years
Patents & Proprietary Technology	6,633		3,859		11 years
Other	4,807		4,032		3 years
	$	215,396	$	137,847

	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 thirty-nine weeks ended September 30, 2017 and September 24, 2016, respectively was as follows:

Thirteen Weeks Ended		Thirty-nine Weeks Ended
2017	2016	2017	2016
4,025	3,964	11,792	12,037

Schedule of future estimated amortization expense

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

	Estimated Amortization Expense
2017	$	15,823
2018	14,492
2019	13,718
2020	12,608
2021	10,474

Schedule of non-amortized intangible assets

The carrying values of trade names at September 30, 2017 and December 31, 2016 were as follows:

	September 30, 2017		December 31, 2016		Year Acquired
Webforge	$	9,362	$	8,624	2010
Valmont SM	9,839		8,765		2014
Newmark	11,111		11,111		2004
Ingal EPS/Ingal Civil Products	7,633		7,032		2010
Donhad	5,758		5,305		2010
Shakespeare	4,000		4,000		2014
Industrial Galvanizers	2,390		2,201		2010
Other	14,448		13,747
	$	64,541	$	60,785

Schedule of carrying amount of goodwill

The carrying amount of goodwill by segment as of September 30, 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	4,568		6,704		—		951		94		12,317
Acquisitions	3,327		—		—		—		—		3,327
Balance at September 30, 2017	$	102,209	$	78,916	$	75,404	$	60,520	$	19,705	$	336,754