Cash, Cash Equivalents and Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2014

Cash Cash Equivalents And Short Term Investments [Abstract]

Summary of Cash, Cash Equivalents and Marketable Securities

Cash equivalents and marketable securities as of December 31, 2014, and 2013 consist of the following (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
December 31, 2014
Cash and cash equivalents:
Cash	$	2,522	$	-	$	-		$	2,522
Money market funds		46,989		-		-			46,989
Total cash and cash equivalents		49,511		-		-			49,511
Marketable securities available-for-sale:
U.S. government agency securities		73,140		11		(10	)		73,141
Total marketable securities available-for-sale		73,140		11		(10	)		73,141
Total cash, cash equivalents and marketable securities	$	122,651	$	11	$	(10	)	$	122,652
December 31, 2013
Cash and cash equivalents:
Cash	$	1,766	$	-	$	-		$	1,766
Money market funds		20,013		-		-			20,013
U.S. government agency securities		1,343		-		-			1,343
Total cash and cash equivalents		23,122		-		-			23,122
Marketable securities available-for-sale:
U.S. government agency securities		166,285		16		(47	)		166,254
Total marketable securities available-for-sale		166,285		16		(47	)		166,254
Total cash, cash equivalents and marketable securities	$	189,407	$	16	$	(47	)	$	189,376

Maturities of Marketable Securities Available-for-Sale

The maturities of our marketable securities available-for-sale are as follows (in thousands):

	December 31, 2014
	Amortized Cost		Estimated Fair Value
Mature in one year or less	$	72,390	$	72,391
Mature after one year through two years		750		750
	$	73,140	$	73,141

- 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