Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Company's Available-for-Sale Securities by Level within Fair Value Hierarchy

The Company’s available-for-sale securities by level within the fair value hierarchy were as follows (in thousands):

As of September 30, 2016	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	9,009	$	—	$	—	$	9,009
Short-term investments:
Corporate debt securities	—		29,795		—		29,795
U.S. government-related debt securities	—		13,321		—		13,321
Total	$	9,009	$	43,116	$	—	$	52,125
As of December 31, 2015	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	5,371	$	—	$	—	$	5,371
Short-term investments:
Corporate debt securities	—		26,088		—		26,088
U.S. government-related debt securities	—		1,100		—		1,100
Total	$	5,371	$	27,188	$	—	$	32,559