CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ 52,142	$ (7,862)
Depreciation and amortization	2,763	2,996
Deferred income taxes	10,588	(7,100)
Equity in (earnings) losses of Kronos Worldwide, Inc.	(30,431)	13,382
Dividends received from Kronos Worldwide, Inc.	15,144	20,075
Marketable equity securities	(21,775)	10,468
Loss on pension plan termination		4,911
Benefit plan expense greater than cash funding	51	70
Noncash interest income	(817)	(2,833)
Noncash interest expense	400	563
Other, net	233	235
Change in assets and liabilities:
Accounts and other receivables, net	2,512	(1,908)
Inventories, net	2,494	(3,199)
Prepaid expenses and other	(36)	103
Accounts payable and accrued liabilities	(14,332)	(13,183)
Income taxes	(26)	(17)
Accounts with affiliates	812	403
Accrued environmental remediation and related costs	518	(1,163)
Other noncurrent assets and liabilities, net	(3,647)	(475)
Net cash provided by operating activities	16,593	15,466
Cash flows from investing activities:
Capital expenditures	(1,194)	(564)
Marketable securities:
Purchases		(61,366)
Proceeds from maturities	54,000	54,000
Note receivable from affiliate:
Collections	20,400	21,900
Loans	(17,700)	(20,700)
Net cash provided by (used in) investing activities	55,506	(6,730)
Cash flows from financing activities:
Dividends paid	(32,726)	(10,254)
Dividends paid to noncontrolling interests in subsidiary	(4,531)	(1,167)
Net cash used in financing activities	(37,257)	(11,421)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	34,842	(2,685)
Balance at beginning of year	141,382	97,502
Balance at end of period	176,224	94,817
Supplemental disclosures - cash paid (received) for:
Interest	39	37
Income taxes, net	$ 21	$ (473)