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Marketable Securities
12 Months Ended
Dec. 31, 2012
Marketable Securities  
Marketable Securities

(3) Marketable Securities

        The amortized cost and fair value for held-to-maturity securities by major security type at December 31, 2012 and 2011 were as follows:

 
  2012   2011  
 
  Amortized
Cost
  Fair Value   Amortized
Cost
  Fair Value  

Held-to-maturity:

                         

Municipal bonds

  $ 2,903,003   $ 2,908,030   $ 4,911,346   $ 4,921,201  

Certificates of deposit

    2,802,993     2,811,677     5,192,983     5,206,119  
                   

 

  $ 5,705,996   $ 5,719,707   $ 10,104,329   $ 10,127,320  
                   

        The fair value of the marketable securities above was determined using Level 2 inputs as discussed in Note17. There were no gross realized gains or losses for the years ended December 31, 2012, 2011 and 2010.

        Maturities of investment securities at December 31, 2012 and 2011 were as follows:

 
  2012   2011  
 
  Amortized
Cost
  Fair Value   Amortized
Cost
  Fair Value  

Due within one year

  $ 5,495,556   $ 5,505,095   $ 4,304,912   $ 4,316,235  

After one year through five years

    210,440     214,612     5,799,417     5,811,085  
                   

 

  $ 5,705,996   $ 5,719,707   $ 10,104,329   $ 10,127,320