FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

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

The following table provides the assets and liabilities carried at fair value measured on a recurring basis as of June 30, 2022 (in thousands):

			Fair Value Measurements, Using
	Total Carrying Value as of June 30,  2022		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	39,661	$	39,661	$	—	$	—
Short-term investments		439,449		439,449		—		—
Long-term U.S. Government bonds investments		179,570		179,570		—		—
Convertible notes		4,000		—		—		4,000

The following table provides the assets and liabilities carried at fair value measured on a recurring basis as of December 31, 2021 (in thousands):

			Fair Value Measurements, Using
	Total Carrying Value as of December 31,  2021		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	55,115	$	55,115	$	—	$	—
Short-term investments		351,194		351,194		—		—
Long-term U.S. Government bonds investments		159,568		159,568		—		—