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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table presents a reconciliation of the beginning and ending balances of the Company’s goodwill at January 1, 2015 and December 31, 2015 (in millions):
 
Infrastructure
Solutions
 
Corrosion
Protection
 
Energy
Services
 
Total
Balance, January 1, 2015
 
 
 
 
 
 
 
Goodwill, gross
$
193,344

 
$
74,943

 
$
76,248

 
$
344,535

Accumulated impairment losses
(16,069
)
 
(35,443
)
 
—

 
(51,512
)
Goodwill, net
177,275

 
39,500

 
76,248

 
293,023

Acquisitions (1)
—

 
—

 
3,998

 
3,998

Impairments (2)
—

 
(9,957
)
 
(33,527
)
 
(43,484
)
Foreign currency translation
(2,819
)
 
(1,598
)
 
—

 
(4,417
)
Balance, December 31, 2015
 
 
 
 
 
 
 
Goodwill, gross
190,525

 
73,345

 
80,246

 
344,116

Accumulated impairment losses
(16,069
)
 
(45,400
)
 
(33,527
)
 
(94,996
)
Goodwill, net
$
174,456

 
$
27,945

 
$
46,719

 
$
249,120

__________________________
(1) 
During the first and second quarters of 2015, the Company recorded goodwill of $3.6 million and $0.4 million, respectively, related to the acquisition of Schultz (see Note 1).
(2) 
During the fourth quarter of 2015, the Company recorded a goodwill impairment to its CRTS reporting unit of $10.0 million, which is included in the Corrosion Protection reportable segment, and a goodwill impairment to its Energy Services reporting unit of $33.5 million (see Note 2).
Schedule of Finite-Lived Intangible Assets
Intangible assets were as follows (in thousands):
 
December 31, 2015
 
December 31, 2014
 
Weighted Average Useful Lives (Years)
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
License agreements
4.3
 
$
3,893

 
$
(3,275
)
 
$
618

 
$
3,908

 
$
(3,131
)
 
$
777

Backlog (1)
0.0
 
—

 
—

 
—

 
4,731

 
(4,731
)
 
—

Leases
11.4
 
2,065

 
(764
)
 
1,301

 
2,067

 
(623
)
 
1,444

Trademarks (2)
15.0
 
22,519

 
(6,262
)
 
16,257

 
21,722

 
(5,199
)
 
16,523

Non-competes (2)
2.4
 
1,210

 
(945
)
 
265

 
1,140

 
(839
)
 
301

Customer relationships (2)
12.8
 
164,779

 
(41,967
)
 
122,812

 
163,386

 
(32,196
)
 
131,190

Patents and acquired technology
14.0
 
55,260

 
(22,395
)
 
32,865

 
54,090

 
(22,052
)
 
32,038

 
 
 
$
249,726

 
$
(75,608
)
 
$
174,118

 
$
251,044

 
$
(68,771
)
 
$
182,273

__________________________
(1) 
Amounts fully realized at December 31, 2015.
(2) 
During the first quarter of 2015, the Company recorded customer relationships, trademarks and non-competes of $2.3 million, $0.7 million and $0.1 million, respectively, related to the acquisition of Schultz (see Note 1).
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
Estimated amortization expense by year is as follows (in thousands):
Year
 
Amount
2016
 
$
13,244

2017
 
13,255

2018
 
13,079

2019
 
12,936

2020
 
12,897