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Fair-Value Measurements
6 Months Ended
Jun. 30, 2011
Fair-Value Measurements  
Fair-Value Measurements
5. Fair-Value Measurements

Assets and liabilities reported at fair value are classified in one of the following three levels within the fair-value hierarchy:

Level 1: Quoted market prices in active markets for identical assets or liabilities
Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data
Level 3: Unobservable inputs that are not corroborated by market data

The following table summarizes the valuation of financial instruments within the fair-value hierarchy:

   
June 30, 2011
 
(Dollars in thousands)
 
Total
   
Level 1
   
Level 2
   
Level 3
 
                         
Cash equivalents
  $ 438,033     $ 105,800     $ 332,233     $ --  
Other marketable securities
    5,774       --       --       5,774  

   
December 31, 2010
 
(Dollars in thousands)
 
Total
   
Level 1
   
Level 2
   
Level 3
 
                         
Cash equivalents
  $ 388,053     $ 118,763     $ 269,290     $ --  
Other marketable securities
    6,039       --       --       6,039  

Cash equivalents consist of short-term interest-bearing instruments (primarily commercial paper, certificates of deposit and money-market funds) with maturities of three months or less at the date of purchase.

Money-market funds reflect their published net asset value and are classified as Level 1 instruments within the fair-value hierarchy. Commercial paper and certificates of deposit are generally valued using published interest rates for instruments with similar terms and maturities, and accordingly, are classified as Level 2 instruments within the fair-value hierarchy. At June 30, 2011, the weighted-average remaining maturity of the cash equivalents was less than one month. Based on their short maturities, the carrying amount of the cash equivalents approximates their fair value.

Con-way holds one auction-rate security, which is valued with an income approach that utilizes a discounted cash flow model. The following table summarizes the change in fair values of Con-way's auction-rate security, which was valued using Level 3 inputs:

       
(Dollars in thousands)
 
Auction-rate security
 
Balance at December 31, 2009
  $ 6,691  
Unrealized gain
    48  
Partial redemption
    (700 )
Balance at December 31, 2010
  $ 6,039  
Unrealized gain
    35  
Partial redemption
    (300 )
Balance at June 30, 2011
  $ 5,774