Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value of Financial Instruments

Schedule of assets that were accounted for at fair value on recurring basis

	June 30, 2020
	Fair Value Measurement Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
Cash equivalents:
Money market funds	$	47,109	$	—	$	—	$	47,109
Total	$	47,109	$	—	$	—	$	47,109

	December 31, 2019
	Fair Value Measurement Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
Cash equivalents:
Money market funds	$	13,949	$	—	$	—	$	13,949
Short-term investments:
U.S. Treasury securities		24,962		—		—		24,962
Total	$	38,911	$	—	$	—	$	38,911