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Other Liabilities
 12 Months Ended
Dec. 31, 2013
Other Liabilities [Abstract]  
Other Liabilities
Other Liabilities
(in thousands) December 31,
 
2013

 
2012

Environmental
 
$
20,610

 
$
33,825

Other
 
68,548

 
43,046

 
 
$
89,158

 
$
76,871