Investments (Tables)

3 Months Ended

Mar. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Summary of amortized cost and gross unrealized losses on all securities

	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
	(in thousands)
Short-term investments:
U.S. Treasury securities	$	9,934	$	11	$	—		$	9,945
Marketable securities		276		—		(156	)	$	120
Total short-term investments	$	10,210	$	11	$	(156	)	$	10,065

	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
	(in thousands)
Short-term investments:
U.S. Treasury securities	$	14,668		—		—			14,668
Marketable securities		961		—		(171	)		790
Total short-term investments	$	15,629	$	—	$	(171	)	$	15,458

Summary of financial assets measured at fair value on a recurring basis

	Level 1		Level 2		Level 3		Total
	(in thousands)
Cash equivalents:
Money market funds	$	8,094	$	—	$	—	$	8,094
Investments:
Available-for-sale securities — current:
U.S. Treasury securities		—		9,945		—		9,945
Marketable securities		120		—		—		120
Total	$	8,214	$	9,945	$	—	$	18,159

	Level 1		Level 2		Level 3		Total
	(in thousands)
Cash equivalents:
Money market funds	$	3,759	$	—	$	—	$	3,759
Investments:
Available-for-sale securities — current:
U.S. Treasury securities		—		14,668		—		14,668
Marketable securities		790		—		—		790
Total	$	4,549	$	14,668	$	—	$	19,217