GOODWILL AND INTANGIBLE ASSETS

Amortized Intangible Assets

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



	June 30, 2018
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	188,767	$	126,904	13 years
Proprietary Software & Database	3,589		3,075		8 years
Patents & Proprietary Technology	7,225		4,238		11 years
Other	4,496		3,789		3 years
	$	204,077	$	138,006



	December 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Weighted Average Life
Customer Relationships	$	200,810	$	131,062	13 years
Proprietary Software & Database	3,671		3,107		8 years
Patents & Proprietary Technology	6,693		3,999		11 years
Other	4,861		4,121		3 years
	$	216,035	$	142,289

Amortization expense for intangible assets for the thirteen and twenty-six weeks ended June 30, 2018 and July 1, 2017, respectively was as follows:



Thirteen Weeks Ended		Twenty-six Weeks Ended
2018	2017	2018	2017
3,572	3,903	7,455	7,767

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



	Estimated Amortization Expense
2018	$	14,187
2019	12,903
2020	11,804
2021	9,748
2022	7,573

The useful lives assigned to finite‑lived intangible assets included consideration of factors such as the Company’s past and expected experience related to customer retention rates, the remaining legal or contractual life of the underlying arrangement that resulted in the recognition of the intangible asset and the Company’s expected use of the intangible asset.

(5) GOODWILL AND INTANGIBLE ASSETS (Continued)

Non-amortized intangible assets

Intangible assets with indefinite lives are not amortized. The carrying values of trade names at June 30, 2018 and December 30, 2017 were as follows:



	June 30, 2018		December 30, 2017		Year Acquired
Newmark	$	11,111	$	11,111	2004
Valmont SM	9,717		9,973		2014
Webforge	9,230		9,432		2010
Ingal EPS/Ingal Civil Products	7,526		7,690		2010
Shakespeare	4,000		4,000		2014
Other	16,894		22,647
	$	58,478	$	64,853

In its determination of these intangible assets as indefinite‑lived, the Company considered such factors as its expected future use of the intangible asset, legal, regulatory, technological and competitive factors that may impact the useful life or value of the intangible asset and the expected costs to maintain the value of the intangible asset. The Company expects that these intangible assets will maintain their value indefinitely. Accordingly, these assets are not amortized.

The Company’s trade names were tested for impairment in the third quarter of 2017. The values of each trade name was determined using the relief-from-royalty method. Based on this evaluation, no trade names were determined to be impaired.

Goodwill

The carrying amount of goodwill by segment as of June 30, 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	—			—			—			3,922			—			3,922
Divestiture of grinding media	—			—			—			—			(15,814		)	(15,814		)
Foreign currency translation	(3,443		)	(380		)	(527		)	(116		)	—			(4,466		)
Balance at June 30, 2018	$	147,963		$	89,868		$	59,947		$	23,584		$	—		$	321,362

The Company’s annual impairment test of goodwill was performed during the third quarter of 2017. As a result of that testing, the Company determined that its goodwill was not impaired, as the valuation of the reporting units exceeded their respective carrying values. The Company's offshore and other complex steel structures reporting unit with $14,464 of goodwill, is the reporting unit that did not have a substantial excess of estimated fair value over its carrying value. The Company continues to monitor changes in global market conditions, including commodity prices, which could impact future results of any of its reporting units.