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FAIR VALUE MEASUREMENTS
12 Months Ended
Sep. 30, 2012
FAIR VALUE MEASUREMENTS [Abstract]  
FAIR VALUE MEASUREMENTS
NOTE 4—FAIR VALUE MEASUREMENTS
Fair value is defined under US GAAP as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.  Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs.  The fair value hierarchy is based on three levels of inputs that may be used to measure fair value as follows:
Level 1—
Quoted prices in active markets for identical assets or liabilities.
Level 2—
Inputs other than quoted prices in active markets, that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3—
Unobservable inputs, for which there is little or no market data for the assets or liabilities.
The following table represents the fair value hierarchy for our financial assets, comprised of cash equivalents and investments, measured at fair value on a recurring basis as of September 30, 2012 and September 30, 2011:

Fair value measurements as of September 30, 2012
 
 
 
  
  
  
 
(in thousands)
 
Level 1
  
Level 2
  
Level 3
  
Total
 
Cash equivalents:
 
  
  
  
 
Money market
 
$
8,256
   
   
  
$
8,256
 

Fair value measurements as of September 30, 2011
 
 
 
  
  
  
 
(in thousands)
 
Level 1
  
Level 2
  
Level 3
  
Total
 
Cash equivalents:
 
  
  
  
 
U. S. Treasury bills
 
$
7,200
  
$
  
$
  
$
7,200
 
Money market
  
1,045
   
   
   
1,045
 
 
                
Total
 
$
8,245
  
$
  
$
  
$
8,245
 
The carrying amounts of certain financial instruments, including cash equivalents, restricted cash, accounts receivable, settlements receivable, accounts payable, settlements payable, and accrued liabilities, approximate fair value due to their short maturities.