Unrestricted Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2012

Unrestricted Marketable Securities

Schedule of unrestricted marketable securities

Unrestricted marketable securities held by the Company were as follows, in thousands:

Available for Sale	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	48,259	$	1	$	(54	)	$	48,206