Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investments Classified as Available-For-Sale

Marketable securities classified as available-for-sale as of December 31, 2014 and 2013 were comprised of (in thousands):

	December 31, 2014								December 31, 2013
			Gross		Gross						Gross		Gross
	Amortized		Unrealized		Unrealized				Amortized		Unrealized		Unrealized
	Cost		Gains		Losses		Fair Value		Cost		Gains		Losses		Fair Value
Auction rate security	$	—	$	—	$	—	$	—	$	1,175	$	615	$	—	$	1,790
Asset-backed securities		46,660		—		(36)		46,624		—		—		—		—
Corporate debt securities		89,126		8		(37)		89,097		11,806		1		—		11,807
Total	$	135,786	$	8	$	(73)	$	135,721	$	12,981	$	616	$	—	$	13,597

- 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