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3. Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2014
Notes to Financial Statements  
Classification of financial instruments valued at fair value
The classification of financial instruments valued at fair value as of March 31, 2014, is as follows:
         
Financial Instruments   Level 1  
       
Cash equivalents   $ 14,926,000  
Securities     377,000  
    $ 15,303,000