Investments (Tables)

9 Months Ended

Sep. 30, 2016

Investments, Debt and Equity Securities [Abstract]

Schedule of Fair Value of Available for Sale Securities Excluding Mutual Funds

The following table summarizes the estimated fair value of investment in debt securities designated as available for sale classified by the contractual maturity date of the security as of September 30, 2016:

	Fair Value
Due within one year	$	155,000
Due one year through three years		1,225,000
Due after three years		183,000
	$	1,563,000

Schedule of Available-for-sale Securities Reconciliation

The cost, gross unrealized gains (losses) and fair value of available for sale securities by major security types as of December 31, 2015 and September 30, 2016 are as follows:

			Unrealized		Unrealized		Fair
September 30, 2016	Cost		Gain		Loss		Value
Investments - short term
Available for sale
U.S. Treasury Notes	$	80,000		—		—	$	80,000
Government agency bonds		50,000		—		—		50,000
Corporate bonds and commercial paper		25,000		—		—		25,000
Common stock		49,000		2,000		—		51,000
Total investments - short term		204,000		2,000		—		206,000
Investments - long term
Available for sale
U.S. Treasury Notes		944,000		4,000		—		948,000
Government agency bonds		100,000		—		—		100,000
Corporate bonds and commercial paper		358,000		2,000		—		360,000
Total investments - long term		1,402,000		6,000		—		1,408,000
Total investments	$	1,606,000	$	8,000	$	—	$	1,614,000

			Unrealized		Unrealized			Fair
December 31, 2015	Cost		Gain		Loss			Value
Investments - short term
Available for sale
Corporate bonds and commercial paper	$	101,000		—		—		$	101,000
U.S. Treasury Notes		100,000		—		—			100,000
Common stock		49,000		9,000		—			58,000
Total investments - short term		250,000		9,000		—			259,000
Marketable securities - long term
Available for sale
U.S. Treasury Notes		915,000		—		(6,000	)		909,000
Government agency bonds		150,000		—		(1,000	)		149,000
Corporate bonds and commercial paper		283,000		—		(2,000	)		281,000
Total investments - long term		1,348,000		—		(9,000	)		1,339,000
Total investments	$	1,598,000	$	9,000	$	(9,000	)	$	1,598,000