Marketable Investments (Tables)

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Schedule of marketable investments

Investment in marketable securities at December 31, 2016 and 2015 consist of the following (in thousands):

	December 31,
	2016		2015
Corporate debt securities	$	1,564	$	2,857
Equity securities		1,057		2,429
Total	$	2,621	$	5,286

Schedule of available-for-sale securities reconciliation

The amortized cost basis amounts, gross unrealized holding gains, gross unrealized holding losses and fair values of available-for-sale securities as of December 31, 2016 and 2015, are as follows (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss			Fair Value
December 31, 2016
Available for sale securities:
Corporate debt securities	$	1,564	$	—	$	—		$	1,564
Equity securities		1,144		—		(87	)		1,057
	$	2,708	$	—	$	(87	)	$	2,621

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss		Fair Value
December 31, 2015
Available for sale securities:
Corporate debt securities	$	2,857	$	—	$	—	$	2,857
Equity securities		2,429		—		—		2,429
	$	5,286	$	—	$	—	$	5,286