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Property, Plant and Equipment
6 Months Ended
Jun. 30, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
3. Property, Plant and Equipment
 
Property, plant and equipment, stated at cost, consist of the following at June 30, 2013 and December 31, 2012 (in thousands):
 
 
 
June 30,
2013
 
December 31,
2012
 
Land and land improvements
 
$
19,643
 
$
19,643
 
Buildings and improvements
 
 
49,838
 
 
49,838
 
Machinery and equipment
 
 
250,087
 
 
250,042
 
Office furniture and equipment
 
 
6,493
 
 
6,493
 
Construction in progress
 
 
1,581
 
 
297
 
 
 
 
327,642
 
 
326,313
 
Accumulated depreciation
 
 
(130,349)
 
 
(116,668)
 
Property, plant and equipment, net
 
$
197,293
 
$
209,645
 
 
Depreciation expense related to property, plant and equipment was $6,840,000 and $13,681,000 for the three and six months ended June 30, 2013, respectively, and was $6,805,000 and $13,602,000 for the three and six months ended June 30, 2012, respectively.