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Intangible Assets
9 Months Ended
Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets
 
Indefinite-lived Intangible Assets

Indefinite-lived intangible assets primarily consist of goodwill and use rights. Use rights of $0.4 million are included in other noncurrent assets on our condensed consolidated balance sheets as of September 30, 2014, December 31, 2013 and September 30, 2013.

The following table presents the goodwill balance by reporting segment (in thousands):
 
 
September 30,
2014
 
December 31,
2013
 
September 30,
2013
Construction
 
$
29,260

 
$
29,260

 
$
28,398

Large Project Construction
 
22,593

 
22,593

 
23,287

Construction Materials
 
1,946

 
1,946

 
2,114

Total goodwill
 
$
53,799

 
$
53,799

 
$
53,799



Amortized Intangible Assets

The detail of our amortized intangible assets that are included in other noncurrent assets on our condensed consolidated balance sheets is as follows (in thousands):
 
 
 
 
Accumulated
 
 
September 30, 2014
 
Gross Value
 
Amortization
 
Net Book Value
Permits
 
$
29,713

 
$
(12,835
)
 
$
16,878

Acquired backlog
 
7,900

 
(7,226
)
 
674

Customer lists
 
4,398

 
(2,711
)
 
1,687

Trade name
 
4,100

 
(755
)
 
3,345

Covenants not to compete and other
 
2,459

 
(2,426
)
 
33

Total amortized intangible assets
 
$
48,570

 
$
(25,953
)
 
$
22,617

 
 
 
 
Accumulated
 
 
December 31, 2013
 
Gross Value
 
Amortization
 
Net Book Value
Permits
 
$
29,713

 
$
(11,992
)
 
$
17,721

Acquired backlog
 
7,900

 
(6,835
)
 
1,065

Customer lists
 
4,398

 
(2,491
)
 
1,907

Trade name
 
4,100

 
(432
)
 
3,668

Covenants not to compete and other
 
2,459

 
(2,408
)
 
51

Total amortized intangible assets
 
$
48,570

 
$
(24,158
)
 
$
24,412

 
 
 
 
Accumulated
 
 
September 30, 2013
 
Gross Value
 
Amortization
 
Net Book Value
Permits
 
$
29,713

 
$
(11,711
)
 
$
18,002

Acquired backlog
 
7,900

 
(5,147
)
 
2,753

Customer lists
 
4,398

 
(2,418
)
 
1,980

Trade name
 
4,100

 
(324
)
 
3,776

Covenants not to compete and other
 
2,459

 
(2,378
)
 
81

Total amortized intangible assets
 
$
48,570

 
$
(21,978
)
 
$
26,592


Amortization expense related to amortized intangible assets for the three and nine months ended September 30, 2014 was $0.6 million and $1.8 million respectively. Amortization expense related to amortized intangible assets for the three and nine months ended September 30, 2013 was $2.2 million and $6.7 million, respectively. Based on the amortized assets balance at September 30, 2014, amortization expense expected to be recorded in the future is as follows: $0.9 million for the remainder of 2014; $2.1 million in 2015; $1.8 million in 2016; $1.7 million in 2017; $1.7 million in 2018; and $14.4 million thereafter.