Fair Value Measurements (Tables)

6 Months Ended

Jun. 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 June 30, 2016	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	12,986	$	—	$	—	$	12,986
Short-term investments:
Corporate debt securities	—		27,918		—		27,918
U.S. government-related debt securities	—		9,928		—		9,928
Total	$	12,986	$	37,846	$	—	$	50,832
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