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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2013
Fair Value Measurements [Abstract]  
Schedule of financial assets and liabilities, at fair value
As indicated in the tables below (which excludes the Company’s pension assets), the Company has determined that all its financial assets and liabilities as of June 30, 2013 and December 31, 2012 are level 1 and level 2 in the fair value hierarchy as defined above (in thousands):

   
June 30, 2013
 
   
Level 1
  
Level 2
  
Total
 
Financial Assets:
         
Trading equity securities:
         
SERP money market fund
 $997  $-  $997 
SERP mutual funds
  1,904   -   1,904 
Preferred stocks
  714   -   714 
Mutual funds
  14,901   -   14,901 
Trading debt securities:
            
Corporate bonds
  3,670   1,168   4,838 
Municipal bonds
  506   1,233   1,739 
Floating rate notes
  303   272   575 
U.S. Treasury bonds and bills
  470   -   470 
Other
  -   980   980 
Short-term derivative financial instruments
  -   1,001   1,001 
    Total financial assets
 $23,465  $4,654  $28,119 
              
Financial Liabilities:
            
SERP liabilities
 $-  $6,949  $6,949 
    Total financial liabilities
 $-  $6,949  $6,949 
 
 
   
December 31, 2012
 
   
Level 1
  
Level 2
  
Total
 
Financial Assets:
         
Trading equity securities:
         
SERP money market fund
 $996  $-  $996 
SERP mutual funds
  1,835   -   1,835 
Preferred stocks
  720   -   720 
Trading debt securities:
            
Corporate bonds
  3,342   909   4,251 
Municipal bonds
  1,449   957   2,406 
Floating rate notes
  749   -   749 
U.S. treasury bonds
  200   -   200 
Other
  -   409   409 
    Total financial assets
 $9,291  $2,275  $11,566 
              
Financial Liabilities:
            
SERP liabilities
 $-  $6,674  $6,674 
Short-term derivative financial instruments
  -   145   145 
    Total financial liabilities
 $-  $6,819  $6,819