Investments (Tables)

6 Months Ended

Jun. 30, 2014

Investments

Schedule of amortized cost and fair value of investments, with gross unrealized gains and losses

At June 30, 2014, the amortized cost and fair value of investments, with gross unrealized gains and losses, were as follows:

(in thousands)	Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses		Fair Value
Money market funds	$	8,840	$	—		$	—	$	8,840
Federal agency securities	15,099		(5		)	—		15,094
Commercial paper	10,244		—			5		10,249
Corporate debt securities	24,391		—			—		24,391
Total investments	$	58,574	$	(5	)	$	5	$	58,574
Reported as:
Cash and cash equivalents								$	8,443
Marketable securities, current								48,981
Marketable securities, non-current								752
Restricted cash								398
Total investments								$	58,574

At December 31, 2013, the amortized cost and fair value of investments, with gross unrealized gains, were as follows:

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Money market funds	$	53,511	$	—	$	—	$	53,511
Federal agency securities	12,301		—		—		12,301
Commercial paper	8,246		3		—		8,249
Corporate debt securities	1,961		—		—		1,961
Total investments	$	76,019	$	3	$	—	$	76,022
Reported as:
Cash and cash equivalents							$	53,306
Marketable securities							22,511
Restricted cash							205
Total investments							$	76,022