Investments (Tables)

9 Months Ended

Sep. 30, 2013

Investments, Debt and Equity Securities [Abstract]



	Investments in marketable securities
	Adjusted Cost		Gross Unrealized Losses			Gross Unrealized Gains		Estimated Fair Value
Marketable securities at September 30, 2013	$	17,860	$	(987	)	$	743	$	17,616

Marketable securities at December 31, 2012	$	34,786	$	(10,443	)	$	2,722	$	27,065

- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

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