Investments in Securities (Tables)

12 Months Ended

Dec. 31, 2023

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