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MARKETABLE SECURITIES (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of marketable securities

			March 31, 2021																								December 31, 2020
(in thousands)			Amortized Cost						Unrealized Gains						Unrealized Losses						Fair Value						Amortized Cost						Unrealized Gains						Unrealized Losses						Fair Value
Government debt			$	13,000					$	1					$	—					$	13,001					$	39,996					$	—					$	(8)					$	39,988
Corporate debt			257,003						15						(369)						256,649						253,345						88						(152)						253,281
			$	270,003					$	16					$	(369)					$	269,650					$	293,341					$	88					$	(160)					$	293,269

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Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

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