Cash, Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2017

Cash, Cash Equivalents and Marketable Securities

Summary of cash, cash equivalents and available-for-sale marketable securities

A summary of cash, cash equivalents and available-for-sale marketable securities held by the Company as of March 31, 2017 and December 31, 2016 is as follows (in thousands):

	March 31, 2017
			Unrealized		Unrealized		Fair
	Cost		gains		losses		value
Cash and cash equivalents:
Cash (Level 1)	$	1,911	$	—	$	—	$	1,911
Money market funds (Level 1)	6,304		—		—		6,304
Corporate debt securities due within 3 months of date of purchase (Level 2)	—		—		—		—
Total cash and cash equivalents	8,215		—		—		8,215
Marketable securities:
Corporate debt securities due within 1 year of date of purchase (Level 2)	31,848		64		—		31,912
Total cash, cash equivalents and marketable securities	$	40,063	$	64	$	—	$	40,127

	December 31, 2016
			Unrealized		Unrealized		Fair
	Cost		gains		losses		value
Cash and cash equivalents:
Cash (Level 1)	$	5,651	$	—	$	—	$	5,651
Money market funds (Level 1)	13,494		—		—		13,494
Corporate debt securities due within 3 months of date of purchase (Level 2)	—		—		—		—
Total cash and cash equivalents	19,145		—		—		19,145
Marketable securities:
Corporate debt securities due within 1 year of date of purchase (Level 2)	21,330		25		—		21,355
Total cash, cash equivalents and marketable securities	$	40,475	$	25	$	—	$	40,500