Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of marketable securities

			Amortized		Unrealized
	Market value		cost basis		loss, net
	(In thousands)
December 31, 2022:
Current assets	$	33,147	$	33,164	$	(17)
December 31, 2023:
Current assets	$	35,354	$	35,359	$	(5)