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MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2022

Dec. 31, 2021

Cash and Cash Equivalents [Abstract]

Marketable Securities

The following table summarizes our marketable securities by significant investment categories as of December 31, 2022:

			Cost Basis			Gross Unrealized Losses			Gross Unrealized Gains			Fair Value
Marketable debt securities(1)			$	11,435		$	(310)		$	—		$	11,125
Marketable equity securities			2,876			(1,809)			—			1,067
Total marketable securities			$	14,311		$	(2,119)		$	—		$	12,192

(1)     Marketable debt securities are comprised primarily of notes of U.S. government agency bonds.

The following tables summarize our marketable securities by significant investment categories as of December 31, 2021:

			Cost Basis			Gross Unrealized Losses			Gross Unrealized Gains			Fair Value
Marketable equity securities			$	756		$	(262)		$	—		$	494

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Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

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