CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ (27,226)	$ 50,360
Depreciation and amortization	1,752	1,861
Deferred income taxes	(9,312)	21,309
Equity in earnings of Kronos Worldwide, Inc.	(45,124)	(70,920)
Dividends received from Kronos Worldwide, Inc.	11,974	10,566
Cash funding of benefit plans in excess of net benefit plan expense	(137)	(23)
Marketable equity securities	20,266
Other, net	371	280
Change in assets and liabilities:
Accounts and other receivables, net	(3,414)	(1,814)
Inventories, net	(1,300)	(417)
Prepaid expenses and other	224	81
Accounts payable and accrued liabilities	43,266	(2,581)
Income taxes	12	(1)
Accounts with affiliates	1,799	(985)
Accrued environmental remediation and related costs	3,552	2,500
Other noncurrent assets and liabilities, net	16,760	(33)
Net cash provided by operating activities	13,463	10,183
Cash flows from investing activities:
Capital expenditures	(1,367)	(1,611)
Promissory notes receivable from affiliate:
Loans	(25,300)	(39,300)
Collections	25,900	27,200
Other, net	225	2
Net cash used in investing activities	(542)	(13,709)
Cash flows from financing activities -
Distributions to noncontrolling interests in subsidiary	(167)	(166)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	12,754	(3,692)
Balance at beginning of period	102,941	98,242
Balance at end of period	115,695	94,550
Supplemental disclosure - cash paid (received) for:
Interest	16	14
Income taxes, net	$ (1,747)	$ 2,157