(5) Marketable Securities

9 Months Ended

Sep. 30, 2013

Notes to Financial Statements

(5) Marketable Securities

The Company’s marketable securities consist of available-for-sale securities, which are carried at fair value, with unrealized gains and losses reported as a separate component of stockholders’ equity. Unrealized gains and losses are computed on the specific identification method. Realized gains, realized losses and declines in value judged to be other-than-temporary, are included in interest and other income, net. The cost of available-for-sale securities sold is based on the specific identification method and interest earned is included in interest and other income.

The cost and fair values of the Company’s available-for-sale marketable securities as of September 30, 2013, are as follows:

	Aggregate		Cost or Amortized		Net Unrealized
	Fair Value		Cost		Gains
Government securities	$	5,513,519	$	5,511,008	$	2,511
Corporate debt securities		251,320		251,378		(58	)
	$	5,764,839	$	5,762,386	$	2,453

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
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