Segment information (Tables)

3 Months Ended

Mar. 31, 2026

Segment information

Schedule Of differences between segment profit and the amounts included in net income (loss)

	Three months ended March 31,
	2025		2026
	(In thousands)
Net sales	$	40,272	$	40,569
Segment profit		5,869		7,050
Corporate expenses		(2,721)		(2,943)
Equity in earnings (losses) of Kronos Worldwide, Inc.		5,525		(1,477)
Interest and dividend income		2,038		1,252
Marketable equity securities		(8,552)		2,695
Other components of net periodic pension and OPEB cost		(285)		—
Interest expense		(575)		(11)
Income tax benefit (expense)		23		(1,472)
Net income	$	1,322	$	5,094