CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income (loss)	$ (16,016)	$ 47,492
Depreciation and amortization	1,689	2,889
Deferred income taxes	(18,185)	15,822
Equity in (earnings) loss of Kronos Worldwide, Inc.	22,790	(61,236)
Distributions from Kronos Worldwide, Inc.	10,566	10,566
Benefit plan expense greater (less) than cash funding:
Litigation settlement gain		(14,964)
Securities transactions gains, net	(11)
Other, net	1,118	282
Change in assets and liabilities:
Accounts and other receivables, net	(2,333)	(2,734)
Inventories, net	(1,154)	150
Prepaid expenses and other	148	127
Accounts payable and accrued liabilities	(3,291)	(2,349)
Income taxes	(5)	(1,576)
Accounts with affiliates	(2,782)	592
Accrued environmental remediation and related costs	11,785	12,042
Other noncurrent assets and liabilities, net	(1,097)	(2,387)
Net cash provided by operating activities	2,629	4,500
Cash flows from investing activities:
Capital expenditures	(1,553)	(2,211)
Proceeds from real estate-related litigation settlement		15,603
Change in restricted cash equivalents	1,021	(284)
Collection of note receivable	3,034
Proceeds from the disposal of:
Assets held for sale	1,559
Marketable securities	272
Property, plant and equipment and other assets	2	30
Purchase of marketable securities	(261)
Net cash provided by investing activities	4,074	13,138
Cash flows from financing activities:
Dividends paid	(12,168)	(12,166)
Distributions to noncontrolling interests in subsidiary	(287)	(409)
Indebtedness:
Borrowings		13,050
Repayments	(500)	(22,300)
Other, net		(57)
Net cash used in financing activities	(12,955)	(21,882)
Cash and cash equivalents-net change from:
Operating, investing and financing activities	(6,252)	(4,244)
Effect of exchange rate changes on cash		72
Cash and cash equivalents at beginning of period	77,987	11,652
Cash and cash equivalents at end of period	71,735	7,480
Cash paid for:
Interest	155	431
Income taxes, net	289	1,977
Non-cash investing activity:
Accrual for capital expenditures	(161)	510
Defined Benefit Pension Plans [Member]
Benefit plan expense greater (less) than cash funding:
Defined benefit pension plans	(229)	104
OPEB [Member]
Benefit plan expense greater (less) than cash funding:
Defined benefit pension plans	$ (364)	$ (320)