CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ 15,768	$ (8,530)
Depreciation and amortization	1,846	2,009
Deferred income taxes	2,149	(5,957)
Equity in (earnings) losses of Kronos Worldwide, Inc.	(8,449)	7,153
Dividends received from Kronos Worldwide, Inc.	13,384	13,384
Marketable equity securities	(3,162)	10,959
Loss on pension plan termination		4,911
Benefit plan expense greater than cash funding	343	355
Noncash interest income	(752)	(1,839)
Noncash interest expense	267	374
Other, net	52	199
Change in assets and liabilities:
Accounts and other receivables, net	2,050	2,787
Inventories, net	3,201	(2,585)
Prepaid expenses and other	372	508
Accounts payable and accrued liabilities	(1,637)	(1,777)
Accounts with affiliates	29	622
Accrued environmental remediation and related costs	684	(999)
Other noncurrent assets and liabilities, net	(3,867)	(646)
Net cash provided by operating activities	22,278	20,928
Cash flows from investing activities:
Capital expenditures	(730)	(478)
Purchases	0	(49,966)
Proceeds from maturities	42,000	26,000
Note receivable from affiliate:
Collections	13,400	14,700
Loans	(12,000)	(13,700)
Net cash provided by (used in) investing activities	42,670	(23,444)
Cash flows from financing activities:
Dividends paid	(7,814)	(6,834)
Dividends paid to noncontrolling interests in subsidiary	(936)	(778)
Net cash used in financing activities	(8,750)	(7,612)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	56,198	(10,128)
Balance at beginning of year	141,382	97,502
Balance at end of period	197,580	87,374
Supplemental disclosures - cash paid (received) for:
Interest	$ 26	24
Income taxes, net		$ (570)