Marketable Securities

6 Months Ended

Jun. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

4. Marketable Securities

The Company’s investments in marketable securities are stated at fair value and are available for sale. During the six months ended June 30, 2023, all remaining investments in marketable securities matured with no realized gain or loss. The following table summarizes the Company’s investments in marketable securities (in thousands) as of:

	December 31, 2022
	Amortized		Gross
	Cost		Unrealized
	Basis		Losses		Fair Value
Marketable securities (current)
U.S. Treasury notes	$	56,418	$	(344)	$	56,074
U.S. Government-sponsored enterprise securities		112,030		(696)		111,334
Total marketable securities (current)	$	168,448	$	(1,040)	$	167,408

The cost of securities sold is based upon the specific identification method. Interest income from marketable securities totaled $0.2 million and $0.8 million for the three and six months ended June 30, 2023, respectively, and $1.2 million and $2.7 million for the three and six months ended June 30, 2022, respectively. It is included in “Interest and investment income” in the Consolidated Statements of Operations.