Short-Term Investments (Tables)

12 Months Ended

Dec. 31, 2019

Investments Disclosure [Abstract]

Summary of Investments Included in Cash Equivalents and Short Term Investments

The following table summarizes the Company’s investments, which are included in cash equivalents and short-term investments:

As of December 31, 2019	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Repurchase agreements	$	14,000	$	—	$	—			14,000
Asset-backed securities		14,866		10		—			14,876
Money market mutual funds		39,524		—		—			39,524
Commercial paper		41,259		—		—			41,259
U.S. Treasury securities		59,926		45		—			59,971
Corporate debt securities		92,380		128		—			92,508
Total	$	261,955	$	183	$	—		$	262,138
As of December 31, 2018	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Asset-backed securities	$	19,541	$	—	$	(21	)	$	19,520
U.S. Treasury securities		29,980		—		(6	)		29,974
Money market mutual funds		31,740		—		—			31,740
Corporate debt securities		54,511		—		(50	)		54,461
Commercial paper		78,571		—		—			78,571
Total	$	214,343	$	—	$	(77	)	$	214,266