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Deferred Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2012
Deferred Compensation Plans [Abstract]  
Summary of changes in deferred compensation plan liability

A summary of changes in the deferred compensation plan liability follows:

 

                         
    2012     2011     2010  

Balance, beginning of year

  $ 987     $ 1,038     $ 1,200  

Deferrals, dividends, and changes in fair value recorded as an expense

    84       80       41  

Deferred compensation payments

    (81     (131     (203
   

 

 

   

 

 

   

 

 

 
       

Balance, end of year

  $ 990     $ 987     $ 1,038