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Intangible Assets
6 Months Ended
Jun. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets
 
The balances of the following intangible assets are included in other noncurrent assets on our condensed consolidated balance sheets:
 
Indefinite-lived Intangible Assets:
(in thousands)
 
June 30,
2012
 
December 31,
2011
 
June 30,
2011
Goodwill1
 
$
9,900

 
$
9,900

 
$
9,900

Use rights and other
 
393

 
393

 
1,319

Total unamortized intangible assets
 
$
10,293

 
$
10,293

 
$
11,219

1Goodwill for all periods presented primarily relates to our Construction segment.
 
Amortized Intangible Assets:
June 30, 2012
 
 
 
Accumulated
 
 
(in thousands)
 
Gross Value
 
Amortization
 
Net Value
Permits
 
$
29,713

 
$
(9,494
)
 
$
20,219

Customer lists
 
2,198

 
(2,056
)
 
142

Covenants not to compete
 
1,588

 
(1,536
)
 
52

Other
 
871

 
(658
)
 
213

Total amortized intangible assets
 
$
34,370

 
$
(13,744
)
 
$
20,626

December 31, 2011
 
 
 
 
 
 
(in thousands)
 
 
 
 
 
 
Permits
 
$
29,713

 
$
(7,573
)
 
$
22,140

Customer lists
 
2,198

 
(1,942
)
 
256

Covenants not to compete
 
1,588

 
(1,476
)
 
112

Other
 
871

 
(583
)
 
288

Total amortized intangible assets
 
$
34,370

 
$
(11,574
)
 
$
22,796

June 30, 2011
 
 
 
 
 
 
(in thousands)
 
 
 
 
 
 
Permits
 
$
29,713

 
$
(6,837
)
 
$
22,876

Customer lists
 
2,198

 
(1,828
)
 
370

Covenants not to compete
 
1,588

 
(1,401
)
 
187

Other
 
871

 
(508
)
 
363

Total amortized intangible assets
 
$
34,370

 
$
(10,574
)
 
$
23,796


Amortization expense related to these intangible assets for the three and six months ended June 30, 2012 was approximately $1.0 million and $2.1 million, respectively, and approximately $0.5 million and $1.0 million for the three and six months ended June 30, 2011, respectively. Based on the amortized intangible assets balance at June 30, 2012, amortization expense expected to be recorded in the future is as follows: $1.6 million for the remainder of 2012; $1.3 million in 2013; $1.1 million in 2014; $1.1 million in 2015; $1.0 million in 2016; and $14.5 million thereafter.