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Other Long-Term Liabilities (Tables)
 9 Months Ended
Sep. 30, 2015
Other Liabilities Disclosure [Abstract]  
Other Long-Term Liabilities

Other long-term liabilities consist of the following:

 

     September 30,
2015		      December 31,
2014		  
     (in thousands)  

Environmental

    $ 3,724       $ 7,384   

Unrecognized tax benefits, interest and penalties

      598         549   

Long-term incentive plan

      596         558   

Acquisition earn-out, long-term

      216         288   
  

 

 

     

 

 

  

Other long-term liabilities

    $ 5,134       $ 8,779