Investment Securities (Tables)

6 Months Ended

Jun. 30, 2020

Investments Debt And Equity Securities [Abstract]

Summary of Available-For-Sale Investment Securities Held by the Company

The following is a summary of the available-for-sale investment securities held by the Company as of June 30, 2020 and December 31, 2019 (in thousands):

	As of June 30, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Available-for-sale investment securities:
U.S. government and agency obligations	$	29,984	$	32	$	(1	)	$	30,015
Certificates of deposit		5,743		57		—			5,800
Commercial paper		2,998		—		—			2,998
Corporate debt securities		5,499		39		—			5,538
Total	$	44,224	$	128	$	(1	)	$	44,351

	As of December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Available-for-sale investment securities:
U.S. government and agency obligations	$	43,275	$	94	$	(1	)	$	43,368
Certificates of deposit		5,931		51		—			5,982
Commercial paper		17,645		—		—			17,645
Corporate debt securities		11,067		7		(3	)		11,071
Total	$	77,918	$	152	$	(4	)	$	78,066