FAIR VALUE MEASUREMENTS - (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Summary of Fair Value Measurements of Cash Equivalents and Marketable Securities

The fair value measurements of the Company’s cash equivalents and marketable securities are identified at the following levels within the fair value hierarchy (in thousands):

	June 30, 2022
	Fair Value Measurements
	Total		Level 1		Level 2		Level 3
Assets:
Cash equivalents:
Money market funds	$	39,669	$	39,669	$	—	$	—
Commercial paper securities	11,340		—		11,340		—
Certificates of deposit	2,498		—		2,498		—
Total	53,507		39,669		13,838		—
Marketable securities:
U.S. government-sponsored entity debt securities	26,425		—		26,425		—
Commercial paper securities	109,367		—		109,367		—
Corporate debt securities	10,806		—		10,806		—
Asset-backed securities	44,324		—		44,324		—
U.S. treasury bills	12,008		—		12,008		—
Certificates of deposit	43,054		—		43,054		—
Total	245,984		—		245,984		—
Total cash equivalents and marketable securities	$	299,491	$	39,669	$	259,822	$	—

	December 31, 2021
	Fair Value Measurements
	Total		Level 1		Level 2		Level 3
Assets:
Cash equivalents:
Money market funds	$	119,919	$	119,919	$	—	$	—
Total	119,919		119,919		—		—
Marketable securities:
U.S. government-sponsored entity debt securities	30,614		—		30,614		—
Commercial paper securities	105,757		—		105,757		—
Corporate debt securities	33,682		—		33,682		—
Asset-backed securities	70,701		—		70,701		—
Certificates of deposit	45,091		—		45,091		—
Total	285,845		—		285,845		—
Total cash equivalents and marketable securities	$	405,764	$	119,919	$	285,845	$	—