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Investments in Securities (Tables)

6 Months Ended

Jun. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities at Cost and Fair Value

The cost and fair value of marketable securities are as follows:


			December 31, 2023
(In thousands)			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. treasury bills			$	60,801					$	131					$	—					$	60,932
Municipal bonds			9,543						148						(404)						9,287
Corporate/government bonds			477						29						—						506
Other bonds			478						27						—						505
			$	71,299					$	335					$	(404)					$	71,230


			December 31, 2022
(In thousands)			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. treasury bills			$	59,764					$	319					$	—					$	60,083
Municipal bonds			9,205						40						(838)						8,407
Corporate/government bonds			477						—						—						477
Other bonds			478						3						—						481
			$	69,924					$	362					$	(838)					$	69,448

The cost and fair value of marketable securities are as follows:


			June 30, 2024
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. treasury bills			$	59,783					$	37					$	(35)					$	59,785
Municipal bonds			8,955						70						(389)						8,636
Corporate/government bonds			477						28						—						505
Other bonds			478						27						—						505
			$	69,693					$	162					$	(424)					$	69,431


			December 31, 2023
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. treasury bills			$	60,801					$	131					$	—					$	60,932
Municipal bonds			9,543						148						(404)						9,287
Corporate/government bonds			477						29						—						506
Other bonds			478						27						—						505
			$	71,299					$	335					$	(404)					$	71,230