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Commitments, Contingencies And Uncertainties (Tables)
9 Months Ended
Sep. 30, 2011
Loss Contingency [Abstract] 
Costs Incurred To Comply With Federal Environment Statutes
The Company incurred the following expenditures during the three, nine and twelve months ended September 30, 2011 and 2010 to comply with federal environmental statutes (in thousands):
 
 
Three Months Ended
 
Nine Months Ended
 
Twelve Months Ended
 
September 30,
 
September 30,
 
September 30,
 
2011
 
2010
 
2011
 
2010
 
2011
 
2010
Clean Air Act
$
164

 
$
88

 
$
457

 
$
376

 
$
696

 
$
523

Clean Water Act
63

 
51

 
172

 
154

 
196

 
305

Allowance for Emissions [Table Text Block]
The Company has purchased allowances and expensed the following costs to meet its annual requirements:
 
 
 
Amount
 
Compliance Year
 
 
(in thousands)
 
2010
 
 
$370
 
2011
 
 
35