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Property, Plant And Equipment
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment, Net [Abstract]  
Property, Plant And Equipment
Property, Plant and Equipment
Property, plant and equipment consist of the following at December 31:
 
 
2012
 
2011
Land
 
$
13,963

 
$
13,509

Building and improvements
 
137,658

 
135,049

Plant and equipment
 
2,131,933

 
2,039,050

Other
 
161,761

 
147,342

 
 
2,445,315

 
2,334,950

Less: Accumulated depreciation
 
(1,287,050
)
 
(1,196,845
)
 
 
1,158,265

 
1,138,105

Construction in progress
 
351,783

 
93,961

Property, plant and equipment, net
 
$
1,510,048

 
$
1,232,066


Construction of assets pending sale-leaseback included in property, plant and equipment, net in the consolidated balance sheet at December 31, 2012 was $2,004 and pertained to the construction of transportation equipment.
Depreciation expense on property, plant and equipment of $120,924, $110,268 and $105,744 is included in cost of sales in the consolidated statements of operations for the years ended December 31, 2012, 2011 and 2010, respectively.
The Company recorded asset impairment charges of $1,975 associated with the closure of its Springfield, Kentucky PVC pipe facility in June 2011. See Note 17 for more information.