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FAIR VALUE OF FINANCIAL INSTRUMENTS
12 Months Ended
Dec. 31, 2011
FAIR VALUE OF FINANCIAL INSTRUMENTS
NOTE 5.
FAIR VALUE OF FINANCIAL INSTRUMENTS
The Company’s financial instruments, other than cash, consist primarily of cash equivalents, short-term investments, accounts receivable, accounts payable and accrued expenses. The carrying value of these financial instruments approximates their fair value. Cash equivalents consist of highly liquid investments with a maturity of three months or less at date of purchase. Short term investments have a maturity of greater than three months at date of purchase. Cash, cash equivalents and short-term investments consist of the following:
 
 
December 31, 2011
 
December 31, 2010
 
 
Cost
 
Fair Value
 
Cost
 
Fair Value 
Cash and cash equivalents:
 
 
 
 
 
 
 
 
Cash and overnight deposits
 
$
445,586

 
$
445,586

 
$
443,716

 
$
443,716

Corporate commercial paper
 
791,729

 
791,902

 
571,260

 
571,373

Time deposits
 
57,041

 
57,041

 
69,489

 
69,489

Total cash and cash equivalents
 
1,294,356

 
1,294,529

 
1,084,465

 
1,084,578

Short-term investments:
 
 
 
 
 
 
 
 
Time deposits
 
472

 
472

 
524

 
524

Total
 
$
1,294,828

 
$
1,295,001

 
$
1,084,989

 
$
1,085,102


The fair value of corporate commercial paper is based on the use of market interest rates for identical or similar assets.