(5) Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2012

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 September 30, 2012, are as follows:

	Aggregate		Cost or Amortized		Net Unrealized
	Fair Value		Cost		Gains / (Loss)
Auction rate securities	$	489,999	$	500,000	$	(10,001)
Government securities		11,331,862		11,321,514		10,348
Corporate debt securities		1,869,839		1,865,942		3,897
	$	13,691,700	$	13,687,456	$	4,244

The cost and fair values of the Company’s available-for-sale marketable securities as of December 31, 2011, are as follows:

	Aggregate		Cost or Amortized		Net Unrealized
	Fair Value		Cost		Gains/ (Loss)
Auction rate securities	$	611,082	$	700,000	$	(88,918)
Government securities		17,303,207		17,286,598		16,609
Corporate debt securities		3,591,121		3,602,602		(11,481)
	$	21,505,410	$	21,589,200	$	(83,790)