Marketable Securities, Margin Loan and Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Marketable Securities, Margin Loan and Fair Value Measurements [Abstract]

Summary of Available for Sale Securities

	As of March 31, 2013
	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Equity Securities	$	7,735	$	378	$	-	$	8,113

	As of December 31, 2012
	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Equity Securities	$	7,915	$	229	$	-	$	8,144