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Fair Value of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2012
Fair Value of Financial Instruments [Abstract]  
Fair Value
The fair value and carrying value of our cash equivalents, investments, long-term debt, after deducting current maturities and our interest rate swaps are as follows at December 31, 2012 and 2011:

(Dollars in thousands)
    
December 31, 2012
  
December 31, 2011
 
   
Input Level
  
Carrying Amount
  
Fair Value
  
Carrying Amount
  
Fair Value
 
Cash equivalents (1)
 2  $-  $-  $16,505  $16,505 
Investments
 2  $3,213  $3,213  $4,277  $4,277 
Long-term debt
 2  $135,133  $138,496  $118,828  $122,886 
Interest rate swaps
 2  $2,432  $2,432  $2,469  $2,469 

(1)
Cash equivalents were commercial paper and are included in cash and cash equivalents on the Consolidated Balance Sheet as of December 31, 2011.