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Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Abstract]  
Schedule of long-term debt including current maturities
 
   
June 30, 2013
   
December 31, 2012
 
(in thousands)
 
Carrying
Amount
   
Fair Value
   
Carrying 
Amount
   
Fair Value
 
Cash and Cash Equivalents
  $ 42,275     $ 42,275     $ 52,362     $ 52,362  
Short-Term Debt
    (1,117     (1,117     --       --  
Long-Term Debt including Current Maturities
    (437,535     (482,670     (421,856 )     (491,244 )