(5) Marketable Securities

6 Months Ended

Jun. 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 June 30, 2013, are as follows:

	Aggregate		Cost or Amortized		Net Unrealized
	Fair Value		Cost		Gains / (Loss)
Government securities	$	7,838,590	$	7,833,830	$	4,760
Corporate debt securities		—		—		—
	$	7,838,590	$	7,833,830	$	4,760
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