Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2016

Investments Classified as Available-For-Sale

Marketable securities classified as available-for-sale as of June 30, 2016 and December 31, 2015 were comprised of (in thousands):

	June 30, 2016								December 31, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury securities	$	21,673	$	21	$	—	$	21,694	$	—	$	—	$	—	$	—
Debt securities of U.S. government agencies		22,531		6		—		22,537		—		—		—		—
Asset-backed securities		55,453		10		—		55,463		20,748		—		(9)		20,739
Corporate debt securities		177,038		242		(7)		177,273		116,821		29		(41)		116,809
Total	$	276,695	$	279	$	(7)	$	276,967	$	137,569	$	29	$	(50)	$	137,548

- 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