FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables present information about the Company’s financial assets and liabilities measured at fair value on a recurring basis and indicate the level of the fair value hierarchy used to determine such fair values:

	Fair value measurements at September 30, 2020 using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	52,018	$	—	$	—	$	52,018
Investments:
Commercial paper	—		69,968		—		69,968
Corporate bonds	—		186,863		—		186,863
U.S. Government agencies	—		20,044		—		20,044
Total	$	52,018	$	276,875	$	—	$	328,893

	Fair value measurements at December 31, 2019 using:
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	24,157	$	—	$	—	$	24,157
Total	$	24,157	$	—	$	—	$	24,157
Liabilities:
Derivative liabilities	$	—	$	—	$	16	$	16
Total	$	—	$	—	$	16	$	16

Reconciliation of Fair Value Liabilities

Derivative liabilities consisted of the following:

	September 30, 2020
Balance - December 31, 2019	$	16
Reclassification to additional paid-in capital in connection with IPO	(16)
Balance - September 30, 2020	$	—