Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2013

Investments Debt And Equity Securities [Abstract]

The table below summarizes the Company’s cash equivalents and available-for-sale securities (in thousands):


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Estimated Fair Value
December 31, 2013
Cash equivalents:
Money market funds	$	6,934	$	—	$	—	$	6,934

Total		6,934		—		—		6,934

Available-for-sale securities:
U.S. government sponsored entity debt securities		121,278		12		—		121,290

Total cash equivalents and available-for-sale securities	$	128,212	$	12	$	—	$	128,224

December 31, 2012
Cash equivalents:
U.S. government sponsored entity debt securities	$	2,997	$	—	$	—	$	2,997
Money market funds		15,839		—		—		15,839

Total		18,836		—		—		18,836

Available-for-sale securities:
U.S. government sponsored entity debt securities		54,426		26		—		54,452

Total cash equivalents and available-for-sale securities	$	73,262	$	26	$	—	$	73,288

- 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.

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