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Fair Value Measurements
9 Months Ended
Jun. 30, 2011
Fair Value Measurements [Abstract]  
Fair Value Measurements
16. Fair Value Measurements
     The fair value measurement guidance establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:
Level 1: Quoted prices in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset and liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.
Level 2: Observable inputs other than Level 1 prices, 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 that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
     Assets and liabilities of the Company measured at fair value on a recurring basis as of June 30, 2011, are summarized as follows (in thousands):
                                 
            Fair Value Measurements at Reporting Date Using  
            Quoted Prices in              
            Active Markets for     Significant Other     Significant  
    June 30,     Identical Assets     Observable Inputs     Unobservable Inputs  
Description   2011     (Level 1)     (Level 2)     (Level 3)  
Assets
                               
Cash Equivalents
  $ 93,413     $ 93,413     $     $  
Available-for-sale securities
    148,490       71,411       77,079        
 
                       
Total Assets
  $ 241,903     $ 164,824     $ 77,079     $  
 
                       
Cash Equivalents
     Cash equivalents of $93.4 million, consisting of Money Market Funds, are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets.
Available-For-Sale Securities
     Available-for-sale securities of $71.4 million, consisting of highly rated Corporate Bonds, are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets of identical assets or liabilities. Available-for-sale securities of $77.1 million, consisting of Asset Backed Securities, Municipal Bonds, and Government Agencies are classified within Level 2 of the fair value hierarchy because they are valued using matrix pricing and benchmarking. Matrix pricing is a mathematical technique used to value securities by relying on the securities’ relationship to other benchmark quoted prices.