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Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets

Goodwill

Changes in the carrying amount of goodwill for the years ended December 31, 2013 and December 31, 2012 are as follows:
 
U.S. Residential
Products
 
U.S. Commercial Products
 
European Roll
Coated
Aluminum
 
European
Engineered
Products
 
Consolidated
Balance at December 30, 2011
$
71,987

 
$
9,067

 
$
103,292

 
$
12,340

 
$
196,686

Acquisition of Cleveland Tubing, Inc.
256

 

 

 

 
256

Foreign currency translation

 

 
1,873

 
560

 
2,433

Balance at December 31, 2012
72,243

 
9,067

 
105,165

 
12,900

 
199,375

Adjustment to Cleveland Tubing, Inc.
48

 

 

 

 
48

Foreign currency translation

 

 
4,384

 
246

 
4,630

Balance at December 31, 2013
$
72,291

 
$
9,067

 
$
109,549

 
$
13,146

 
$
204,053



Accumulated impairment losses as of December 31, 2013 were $150.9 million for U.S. Residential Products, $58.7 million for U.S. Commercial Products, $60.2 million for European Roll Coated Aluminum Products and $10.2 million for European Engineered Products. Accumulated impairment losses as of December 31, 2012 were $151.2 million for U.S. Residential Products, $58.7 million for U.S. Commercial Products, $57.8 million for European Roll Coated Aluminum and $10.0 million for European Engineered Products. Changes in accumulated impairment losses resulted from foreign currency translation adjustments related to goodwill in the Company's foreign reporting units.
Annual Impairment Test
Goodwill is tested for impairment annually on the first day of the fourth quarter or more frequently if events or circumstances indicate the potential for impairment. For impairment testing purposes, five reporting units have been identified at the operating segment level, primarily based upon the nature of discrete businesses comprising the Company's operations. As of December 31, 2013, goodwill has been allocated to four of the identified reporting units. Two operating segments are below the required quantitative thresholds and have been aggregated into one reporting segment, European Engineered Products.
The impairment test for goodwill is a two step process. If the carrying value of the reporting unit exceeds its fair value, the goodwill is potentially impaired and the implied fair value of goodwill must be determined by estimating the fair value of the reporting units and allocating such value to the tangible and identifiable intangible assets of each reporting unit. If the carrying amount of a reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized equal to the excess of the carrying amount of goodwill over its implied fair value. The Company determine the fair value of each reporting unit based on an income approach, using a discounted cash flow analysis, and a market valuation approach, using market multiples of publicly traded guideline companies. The discounted cash flow analysis requires various judgmental assumptions about future cash flows, growth rates, and weighted average cost of capital. The assumptions about future cash flows and growth rates are based on an assessment of the business plans of each reporting unit. Discount rate assumptions are based on an assessment of the risk inherent in the future cash flows of the respective reporting units.
Various assumptions, including assumptions regarding future cash flows, market multiples, growth rates and discount rates, are made in the assessment of goodwill for impairment. The assumptions about future cash flows and growth rates are based on the current business plans of the reporting unit. Discount rate assumptions are based on an assessment of the risk inherent in the future cash flows of the reporting unit. These assumptions and estimates are complex and often subjective. They are sensitive to changes in underlying assumptions and can be affected by a variety of factors, including external factors such as industry and economic trends, and internal factors such as changes in the Company's business strategy and internal forecasts.
No impairment charges were recorded based upon impairment testing performed in 2013, 2012 or 2011.
Intangible Assets
Intangible assets consisted of the following:
 
As of December 31, 2013
 
As of December 31, 2012
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
Intangible assets subject to amortization:
 
 
 
 
 
 
 
 
 
 
 
Customer relationships
$
215,922

 
$
(175,291
)
 
$
40,631

 
$
212,532

 
$
(157,943
)
 
$
54,589

Patents
5,993

 
(5,020
)
 
973

 
5,800

 
(4,425
)
 
1,375

 
221,915

 
(180,311
)
 
41,604

 
218,332

 
(162,368
)
 
55,964

Intangible assets not subject to amortization:
 
 
 
 
 
 
 
 
 
 
 
Trade names
6,100

 

 
6,100

 
6,100

 

 
6,100

Total intangible assets
$
228,015

 
$
(180,311
)
 
$
47,704

 
$
224,432

 
$
(162,368
)
 
$
62,064


The aggregate amortization expense for intangible assets for 2013, 2012, and 2011 was $15.2 million, $16.1 million, and $18.1 million, respectively. The average useful lives of the Company's customer relationships and patents are 12 years and 10 years, respectively. Based on the carrying value of identified intangible assets recorded at December 31, 2013, and assuming no subsequent impairment of the underlying assets, the aggregate annual amortization expense for the next 5 years is expected to be as follows:
 
Amortization of
Intangible
Assets
2014
$
13,482

2015
11,900

2016
10,578

2017
4,427

2018
478