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Intangible Assets
3 Months Ended
Mar. 31, 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)
 
March 31,
2012
 
December 31,
2011
 
March 31,
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:
March 31, 2012
 
 
 
Accumulated
 
 
(in thousands)
 
Gross Value
 
Amortization
 
Net Value
Permits
 
$
29,713

 
$
(8,589
)
 
$
21,124

Customer lists
 
2,198

 
(2,000
)
 
198

Covenants not to compete
 
1,588

 
(1,510
)
 
78

Other
 
871

 
(621
)
 
250

Total amortized intangible assets
 
$
34,370

 
$
(12,720
)
 
$
21,650

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

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

 
$
(6,468
)
 
$
23,245

Customer lists
 
2,198

 
(1,772
)
 
426

Covenants not to compete
 
1,588

 
(1,364
)
 
224

Other
 
871

 
(470
)
 
401

Total amortized intangible assets
 
$
34,370

 
$
(10,074
)
 
$
24,296


Amortization expense related to these intangible assets for the three months ended March 31, 2012 and 2011 was approximately $1.1 million and $0.5 million, respectively. Based on the amortized intangible assets balance at March 31, 2012, amortization expense expected to be recorded in the future is as follows: $2.6 million for the remainder of 2012; $1.3 million in 2013; $1.1 million in 2014; $1.1 million in 2015; $1.1 million in 2016; and $14.5 million thereafter.