FAIR VALUE MEASUREMENTS

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

4. FAIR VALUE MEASUREMENTS:

The FASB established a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices for identical assets in active markets; (Level 2) inputs other than the quoted prices in active markets that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions. This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value.

The Company’s cash equivalents and short-term marketable securities are classified within Level 1 or Level 2 of the fair-value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.

The fair-value hierarchy of the Company’s cash equivalents and marketable securities at March 31, 2021, and December 31, 2020, was as follows:

	Fair Value Measurement at
	March 31, 2021
			Quoted Prices in
			Active Markets for		Significant Other
			Identical Assets		Observable Inputs
(In thousands)	Total Fair Value		(Level 1)		(Level 2)
Corporate securities	$	126,085	$	—	$	126,085
Commercial paper		297,727		—		297,727
Money market funds		13,170		13,170		—
Total	$	436,982	$	13,170	$	423,812

	Fair Value Measurement at
	December 31, 2020
			Quoted Prices in
			Active Markets for		Significant Other
			Identical Assets		Observable Inputs
(In thousands)	Total Fair Value		(Level 1)		(Level 2)
Corporate securities	$	146,658	$	—	$	146,658
Commercial paper		253,855		—		253,855
Money market funds		1,634		1,634		—
Total	$	402,147	$	1,634	$	400,513

The Company did not transfer any investments between Level 1 and Level 2 of the fair-value hierarchy in the three months ended March 31, 2021, and the twelve months ended December 31, 2020.