CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ (7,862)	$ 41,910
Depreciation and amortization	2,996	2,962
Deferred income taxes	(7,100)	3,336
Equity in (earnings) losses of Kronos Worldwide, Inc.	13,382	(37,940)
Dividends received from Kronos Worldwide, Inc.	20,075	20,074
Marketable equity securities	10,468	4,300
Loss on pension plan termination	4,911	0
Benefit plan expense greater than cash funding	70	(127)
Noncash interest income	(2,833)	0
Noncash interest expense	563	722
Other, net	235	(8)
Change in assets and liabilities:
Accounts and other receivables, net	(1,908)	(3,599)
Inventories, net	(3,199)	(7,846)
Prepaid expenses and other	103	(34)
Accounts payable and accrued liabilities	(13,183)	(10,552)
Income taxes	(17)	(22)
Accounts with affiliates	403	(33)
Accrued environmental remediation and related costs	(1,163)	(398)
Other noncurrent assets and liabilities, net	(475)	(12)
Net cash provided by operating activities	15,466	12,733
Cash flows from investing activities:
Capital expenditures	(564)	(3,008)
Purchases	(61,366)	0
Proceeds from maturities	54,000	0
Note receivable from affiliate:
Collections	21,900	21,100
Loans	(20,700)	(17,100)
Other, net	0	281
Net cash provided by (used in) investing activities	(6,730)	1,273
Cash flows from financing activities:
Dividends paid	(10,254)	(27,336)
Subsidiary treasury stock acquired	0	(1,744)
Dividends paid to noncontrolling interests in subsidiary	(1,167)	(3,916)
Other, net	0	(14)
Net cash used in financing activities	(11,421)	(33,010)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	(2,685)	(19,004)
Balance at beginning of year	97,502	175,242
Balance at end of period	94,817	156,238
Supplemental disclosures - cash paid (received) for:
Interest	37	23
Income taxes, net	$ (473)	$ 281