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

2. FAIR VALUE MEASUREMENTS

Cash Equivalents and Short-term Investments

The financial instruments of the Company measured at fair value on a recurring basis are cash equivalents and short-term investments. The Company's cash equivalents and short-term investments are classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The Company did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.

The types of instruments valued based on quoted market prices in active markets include most U.S. Treasury securities and most money market securities. Such instruments are generally classified within Level 1 of the fair value hierarchy.

The types of instruments valued based on quoted prices in markets that are less active, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency include most investment-grade corporate commercial paper. Such instruments are generally classified within Level 2 of the fair value hierarchy.

The types of instruments valued based on unobservable inputs which reflect the reporting entity's own assumptions or data that market participants would use in valuing an instrument are generally classified within Level 3 of the fair value hierarchy.

 

In January 2010, the FASB ratified ASU 2010-06 "Fair Value Measurements and Disclosures – Improving Disclosures about Fair Value Measurements" ("ASU 2010-06"). ASU 2010-06 requires new disclosures for significant transfers in and out of Level 1 and 2 of the fair value hierarchy and the level of disaggregation of assets or liabilities and the valuation techniques and inputs used to measure fair value. The Company adopted the updated guidance which was effective for the Company's annual reporting period at December 31, 2009, with the exception of new Level 3 activity disclosures, which was adopted January 1, 2011. The adoption of this guidance did not have a material impact on its condensed consolidated results of operations and financial condition.

Financial instruments measured at fair value on a recurring basis as of June 30, 2011 and December 31, 2010 are classified based on the valuation technique in the table below:

 

0000000 0000000 0000000 0000000
    June 30, 2011
Fair value measurements using
       
    Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)
    Significant
Other
Observable
Inputs
(Level 2)
    Significant
Unobservable
Inputs
(Level 3)
    Total  
    (In thousands)  

Assets:

       

U.S. Treasury securities

  $ 48,971      $ 0      $ 0      $ 48,971   

Money market accounts

    13,415        0        0        13,415   
 

 

 

   

 

 

   

 

 

   

 

 

 

Total assets at fair value

  $ 62,386      $ 0      $ 0      $ 62,386   
 

 

 

   

 

 

   

 

 

   

 

 

 

The above table excludes $2.5 million of cash held in banks.

 

0000000 0000000 0000000 0000000
    December 31, 2010
Fair value measurements using
       
    Quoted Prices  in
Active Markets
for Identical
Assets
(Level 1)
    Significant
Other
Observable
Inputs
(Level 2)
    Significant
Unobservable
Inputs
(Level 3)
    Total  
       
    (In thousands)  

Assets:

       

U.S. Treasury securities

  $ 48,961      $ 0      $ 0      $ 48,961   

Money market accounts

    7,356        0        0        7,356   
 

 

 

   

 

 

   

 

 

   

 

 

 

Total assets at fair value

  $ 56,317      $ 0      $ 0      $ 56,317   
 

 

 

   

 

 

   

 

 

   

 

 

 

The above table excludes $4.9 million of cash held in banks.

Short-term Investments

 

    June 30, 2011  
    Amortized
Cost
    Gross
Unrealized
Holding
Gains
    Gross
Unrealized
Holding
Losses
    Fair Value  
    (In thousands)  

U.S. Treasury securities

  $ 48,938      $ 33      $ 0      $ 48,971   
 

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $ 48,938      $ 33      $ 0      $ 48,971   
 

 

 

   

 

 

   

 

 

   

 

 

 

 

    December 31, 2010  
    Amortized
Cost
    Gross
Unrealized
Holding
Gains
    Gross
Unrealized
Holding
Losses
    Fair Value  
    (In thousands)  

U.S. Treasury securities

  $ 48,942      $ 19      $ 0      $ 48,961   
 

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $ 48,942      $ 19      $ 0      $ 48,961   
 

 

 

   

 

 

   

 

 

   

 

 

 

The contractual maturities of the Company's available-for-sale securities on June 30, 2011 and December 31, 2010 were all due within one year.