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Investments (Tables)
 12 Months Ended
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investments

Investments held are summarized as follows (in thousands):

 

     December 31, 2014      December 31, 2013  
     Short-Term      Long-Term      Short-Term      Long-Term  

Municipal debt securities

    $ 5,539       $ 35,827       $ 5,492       $ 34,495   

Federal home loan securities

      —           27,030         —           22,520   

Certificates of deposit

      496         1,225         965         496   
  

 

 

     

 

 

     

 

 

     

 

 

  
   $ 6,035       $ 64,082       $ 6,457       $ 57,511   
  

 

 

     

 

 

     

 

 

     

 

 

  

 

 
Schedule of Contractual Maturities of Long-Term Investments

Contractual maturities of long-term investments are summarized as follows (in thousands):

 

     December 31,  
     2014      2013  

Due after one year through five years

    $ 54,959       $ 41,655   

Due after five years through seven years

      9,123         15,856   
  

 

 

     

 

 

  
$ 64,082    $ 57,511