Marketable Securities

12 Months Ended

Dec. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

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 (loss), 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 December 31, 2013, were as follows: 

	Aggregate Fair Value		Cost or Amortized Cost		Net Unrealized Gains
Government securities	$	6,252,339	$	6,249,483	$	2,856
Corporate debt securities	1,820,769		1,820,215		554
	$	8,073,108	$	8,069,698	$	3,410

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

	Aggregate Fair Value		Cost or Amortized Cost		Net Unrealized 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

The cost and fair values of available-for-sale securities by contractual maturity as of December 31, 2013, were as follows: 

	Fair Value		Cost
Due within one year	$	7,161,703	$	7,157,746
Due after one year	911,405		911,952
	$	8,073,108	$	8,069,698