FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures Abstract

Fair value of marketable securities and investments

The fair-value hierarchy of the Company’s cash equivalents and marketable securities at March 31, 2022, and December 31, 2021, was as follows:

	Fair Value Measurement at
	March 31, 2022
			Quoted Prices in
			Active Markets for		Significant Other
			Identical Assets		Observable Inputs
(In thousands)	Total Fair Value		(Level 1)		(Level 2)
Commercial paper	$	85,233	$	—	$	85,233
Corporate securities		267,899		—		267,899
Money market funds		22,658		22,658		—
Total	$	375,790	$	22,658	$	353,132

	Fair Value Measurement at
	December 31, 2021
			Quoted Prices in
			Active Markets for		Significant Other
			Identical Assets		Observable Inputs
(In thousands)	Total Fair Value		(Level 1)		(Level 2)
Commercial paper	$	172,237	$	—	$	172,237
Corporate securities		282,540		—		282,540
Money market funds		29,793		29,793		—
Total	$	484,570	$	29,793	$	454,777