Marketable Securities and Cash Equivalents (Tables)

3 Months Ended

Mar. 31, 2019

Investments Debt And Equity Securities [Abstract]

Summary of Marketable Securities and Cash Equivalents

The following table summarizes the Company’s marketable securities and cash equivalents as of March 31, 2019 and December 31, 2018:

	March 31, 2019
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Cash equivalents:
Money market funds	$	32,440	$	—	$	—	$	32,440
Total cash equivalents	$	32,440	$	—	$	—	$	32,440
Marketable securities:
Corporate debt securities	$	1,997	$	—	$	—	$	1,997
Commercial paper		16,930		—		—		16,930
Government securities		2,997		—		—		2,997
Total marketable securities	$	21,924	$	—	$	—	$	21,924
Total cash equivalents and marketable securities	$	54,364	$	—	$	—	$	54,364

	December 31, 2018
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Cash equivalents:
Money market funds	$	16,292	$	—	$	—		$	16,292
Commercial paper		1,998		—		—			1,998
Total cash equivalents	$	18,290	$	—	$	—		$	18,290
Marketable securities:
Commercial paper	$	31,766	$	—	$	—		$	31,766
Corporate debt securities		7,487		—		(8	)		7,479
Government securities		11,955		—		(1	)		11,954
Total marketable securities	$	51,208	$	—	$	(9	)	$	51,199