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Debt (Tables)
12 Months Ended
Dec. 31, 2012
Debt [Abstract]  
Long-term capital lease obligation
                 
    2012     2011  
    (in thousands)  

Capital lease obligations, 6.4% (2012) and 6.2% (2011) weighted-average interest rate at December 31, due to 2017

  $ 2,226     $ 3,239  

Current portion

    (1,347     (2,018
   

 

 

   

 

 

 

Long-term capital leases

  $ 879     $ 1,221  
   

 

 

   

 

 

 
Aggregate annual maturities of capital lease obligations
         
    (in thousands)  

2013

  $ 1,421  

2014

    594  

2015

    283  

2016

    34  

2017

    17  
   

 

 

 

Total

    2,349  

Less: Amount representing interest

    (123
   

 

 

 

Present value of minimum lease payments

  $ 2,226