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Associate (Employee) Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits

The following disclosures of the net periodic benefit cost components of postretirement benefits were measured at January 1, 2014 and 2013:

 

     Three months ended
September 30,		      Nine months ended
September 30,		  
     2014     2013      2014     2013  
(In Thousands)                          

Service cost

    $ 49     $ 86      $ 147     $ 258  

Interest cost

      48       44        146       132  

Prior service cost amortization

      (14 )      —          (44 )      —    

Net loss recognition

      22       20        66       60  
  

 

 

    

 

 

     

 

 

    

 

 

  

Net periodic benefit cost

    $ 105     $ 150      $ 315     $ 450