Marketable securities (Tables)

12 Months Ended

Dec. 31, 2022

Marketable securities

Schedule of Marketable Securities

	Fair value			Cost or
	measurement	Market		amortized		Unrealized
	level	value		cost		gain (loss)
		(In thousands)
December 31, 2021
Noncurrent assets
Valhi common stock	1	$	34,435	$	24,347	$	10,088
December 31, 2022
Current assets - fixed income securities	2	$	70,164	$	70,226	$	(62)
Noncurrent assets
Valhi common stock	1	$	26,350	$	24,347	$	2,003