CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 41,910	$ 38,029
Depreciation and amortization	2,962	2,861
Deferred income taxes	3,336	5,414
Equity in earnings of Kronos Worldwide, Inc.	(37,940)	(24,718)
Dividends received from Kronos Worldwide, Inc.	20,074	19,017
Marketable equity securities	4,300	(9,737)
Noncash interest expense	722	878
Benefit plan expense less than cash funding	(127)	(435)
Other, net	(8)	80
Change in assets and liabilities:
Accounts and other receivables, net	(3,599)	(4,044)
Inventories, net	(7,846)	(5,417)
Prepaid expenses and other	(34)	(1,445)
Accounts payable and accrued liabilities	(10,552)	(10,060)
Income taxes	(22)	(5)
Accounts with affiliates	(33)	326
Accrued environmental remediation and related costs	(398)	(426)
Other noncurrent assets and liabilities, net	(12)	(54)
Net cash provided by operating activities	12,733	10,264
Cash flows from investing activities:
Capital expenditures	(3,008)	(2,266)
Note receivable from affiliate:
Collections	21,100	33,100
Loans	(17,100)	(25,400)
Other, net	281
Net cash provided by investing activities	1,273	5,434
Cash flows from financing activities:
Dividends paid	(27,336)	(8,783)
Subsidiary treasury stock acquired	(1,744)	(755)
Dividends paid to noncontrolling interests in subsidiary	(3,916)	(999)
Other, net	(14)
Net cash used in financing activities	(33,010)	(10,537)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	(19,004)	5,161
Balance at beginning of period	175,242	165,272
Balance at end of period	156,238	170,433
Supplemental disclosures - cash paid for:
Interest	23	19
Income taxes, net	$ 281	$ 38