CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 38,029	$ 11,498
Depreciation and amortization	2,861	2,872
Deferred income taxes	5,414	(3,538)
Equity in earnings of Kronos Worldwide, Inc.	(24,718)	(16,333)
Dividends received from Kronos Worldwide, Inc.	19,017	19,017
Marketable equity securities	(9,737)	11,115
Noncash interest expense	878	1,031
Benefit plan expense less than cash funding	(435)	(472)
Other, net	80	32
Change in assets and liabilities:
Accounts and other receivables, net	(4,044)	(422)
Inventories, net	(5,417)	(937)
Prepaid expenses and other	(1,445)	72
Accounts payable and accrued liabilities	(10,060)	(14,171)
Income taxes	(5)	(94)
Accounts with affiliates	326	487
Accrued environmental remediation and related costs	(426)	(938)
Other noncurrent assets and liabilities, net	(54)	(65)
Net cash provided by operating activities	10,264	9,154
Cash flows from investing activities:
Capital expenditures	(2,266)	(1,291)
Note receivable from affiliate:
Collections	33,100	22,828
Loans	(25,400)	(25,228)
Net cash provided by (used in) investing activities	5,434	(3,691)
Cash flows from financing activities:
Dividends paid	(8,783)	(5,853)
Subsidiary treasury stock acquired	(755)
Distributions to noncontrolling interests in subsidiary	(999)	(507)
Net cash used in financing activities	(10,537)	(6,360)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	5,161	(897)
Balance at beginning of period	165,272	157,870
Balance at end of period	170,433	156,973
Supplemental disclosures - cash paid for:
Interest	19	21
Income taxes, net	$ 38	$ 48