Cash, Cash Equivalents and Available for Sale Securities (Tables)

6 Months Ended

Jun. 30, 2013

Cash, Cash Equivalents and Available for Sale Securities [Abstract]

Available for sale securities, including carrying value and estimated fair values, are summarized as follows:



	As of June 30, 2013								As of December 31, 2012
	Cost		Fair Value		Carrying Value		Unrealized Gain		Cost		Fair Value		Carrying Value		Unrealized Gain
	(in thousands)
U.S. government agency notes	$	—	$	—	$	—	$	—	$	7,093	$	7,097	$	7,097	$	4
Corporate debt securities	8,107		8,112		8,112		5		43,772		43,778		43,778		6
Total	$	8,107	$	8,112	$	8,112	$	5	$	50,865	$	50,875	$	50,875	$	10

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References+ Details