(5) Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2013

Notes to Financial Statements

Schedule Of Available For Sale Securities

The cost and fair values of the Company’s available-for-sale marketable securities as of March 31, 2013, are as follows:

	Aggregate		Cost or Amortized		Net Unrealized
	Fair Value		Cost		Gains / (Loss)
Government securities	$	8,415,761	$	8,406,217	$	9,544
Corporate debt securities		1,390,129		1,389,456		673
	$	9,805,890	$	9,795,673	$	10,217

The cost and fair values of the Company’s available-for-sale marketable securities as of December 31, 2012, are as follows:

	Aggregate		Cost or Amortized		Net Unrealized
	Fair Value		Cost		Gains / (Loss)
Government securities	$	8,328,392	$	8,324,372		4,020
Corporate debt securities		2,202,550		2,200,360		2,190
	$	10,530,942	$	10,524,732	$	6,210