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Fair Value Information
12 Months Ended
Dec. 31, 2011
Fair Value Information  
Fair Value Information

Note 10 Fair Value Information

The carrying amounts for cash, accounts receivable and accounts payable approximate fair value because of the short maturities of these instruments. The fair values of the Company's marketable securities, as disclosed in Note 2, are based on quoted market prices and institutional pricing guidelines for those securities not classified as Level 1 securities.