Short-Term Investments (Tables)

9 Months Ended

Sep. 30, 2016

Cash and Cash Equivalents [Abstract]

Summary of Short-Term Investments

The following table summarizes the Company’s short-term investments (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
As of September 30, 2016
Corporate bonds	$	7,932	$	1	$	(2	)	$	7,931
Total short-term investments	$	7,932	$	1	$	(2	)	$	7,931
As of December 31, 2015
Corporate bonds	$	25,557	$	—	$	(52	)	$	25,505
Commercial paper	1,099		—		—			1,099
Total short-term investments	$	26,656	$	—	$	(52	)	$	26,604

Maturities of Short-Term Investments

The following table summarizes the maturities of the Company’s short-term investments (in thousands):

	September 30, 2016		December 31, 2015
Less than one year	$	7,931	$	19,642
Due in 1 - 2 years	—		6,962
Total short-term investments	$	7,931	$	26,604