Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities

The cost and fair values of the Company’s available-for-sale marketable securities as of December 31, 2014, were as follows: 

	Aggregate Fair Value		Cost or Amortized Cost		Net Unrealized Losses
Government securities	$	6,740,825	$	6,741,466	$	(641	)
Corporate debt securities	4,159,897		4,160,664		(767		)
	$	10,900,722	$	10,902,130	$	(1,408	)

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

Schedule of cost basis and fair value of available-for-sale securities by contractual maturity

The cost and fair values of available-for-sale securities by contractual maturity as of December 31, 2014, were as follows: 

	Fair Value		Cost
Due within one year	$	7,803,639	$	7,803,190
Due after one year	3,097,083		3,098,940
	$	10,900,722	$	10,902,130