Available-for-sale marketable securities and cash and cash equivalents as of March 31, 2017 and December 31, 2016 consist of the following (in thousands):



	March 31, 2017
	Amortized Cost Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash and cash equivalents:
Cash	$	96,823	$	—	$	—		$	96,823
Money market funds	77,798		—		—			77,798
Total	$	174,621	$	—	$	—		$	174,621

Marketable securities:
Domestic corporate debt securities	$	37,444	$	—	$	(13	)	$	37,431
Domestic corporate commercial paper	51,859		48		—			51,907
Asset-backed securities	18,149		—		(1		)	18,148
Total	$	107,452	$	48	$	(14	)	$	107,486



	December 31, 2016
	Amortized Cost Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash and cash equivalents:
Cash	$	77,443	$	—	$	—		$	77,443
Money market funds	173,631		—		—			173,631
Domestic corporate commercial paper	5,487		—		—			5,487
Domestic corporate debt securities	2,006		—		—			2,006
Total	$	258,567	$	—	$	—		$	258,567

Marketable securities:
Domestic corporate debt securities	$	19,317	$	—	$	(2	)	$	19,315
Domestic corporate commercial paper	31,852		78		—			31,930
Asset-backed securities	22,639		—		(4		)	22,635
Total	$	73,808	$	78	$	(6	)	$	73,880