Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2016

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 March 31, 2016, are as follows: 

	Aggregate Fair Value		Cost or Amortized Cost		Net Unrealized Gains
Government securities	$	2,551,200	$	2,550,589	$	611
Corporate debt securities	539,591		539,569		22
Marketable Securities	$	3,090,791	$	3,090,158	$	633

The cost and fair values of the Company’s available-for-sale marketable securities as of December 31, 2015, are as follows: 

	Aggregate Fair Value		Cost or Amortized Cost		Net Unrealized Losses
Government securities	$	6,560,303	$	6,562,792	$	(2,489	)
Corporate debt securities	859,739		860,656		(917		)
Marketable Securities	$	7,420,042	$	7,423,448	$	(3,406	)

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 March 31, 2016, were as follows:

	Fair Value		Cost
Due within one year	$	3,090,791	$	3,090,158
Due after one year	—		—
	$	3,090,791	$	3,090,158