CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ (22,716)	$ 29,630	$ (54,543)
Depreciation and amortization	3,609	3,601	3,335
Deferred income taxes	(24,030)	4,167	(41,891)
Provision for inventory reserves	233	24	228
Cash funding of benefit plans in excess of net benefit plan expense	(1,349)	(2,557)	(1,224)
Equity in losses (earnings) of Kronos Worldwide, Inc.	52,770	(30,161)	31,007
Dividends received from Kronos Worldwide, Inc.	21,132	21,132	21,132
Securities transactions, net	(3)	(16)	(11)
Other, net	191	210	81
Change in assets and liabilities:
Accounts and other receivables, net	246	1,220	(1,461)
Inventories, net	1,532	(3,652)	(2,240)
Prepaid expenses and other	(189)	18	166
Accounts payable and accrued liabilities	(1,245)	2,855	(3,347)
Income taxes	(2)	5
Accounts with affiliates	(439)	726	(369)
Accrued environmental remediation and related costs	3,118	(3,621)	65,630
Other noncurrent assets and liabilities, net	(4,746)	(29)	(1,588)
Net cash provided by operating activities	28,112	23,552	14,905
Cash flows from investing activities:
Capital expenditures	(4,304)	(2,858)	(3,541)
Collection of promissory note receivable			3,034
Change in restricted cash equivalents, net	420	(384)	2,018
Net proceeds from the disposal of:
Assets held for sale			1,559
Marketable securities	255	660	272
Purchase of marketable securities	(251)	(643)	(261)
Other		(48)	(97)
Net cash provided by (used in) investing activities	(3,880)	(3,273)	2,984
Cash flows from financing activities:
Cash dividends paid			(24,336)
Distributions to noncontrolling interests in subsidiary	(330)	(328)	(451)
Indebtedness - repayments			(18,480)
Net cash used in financing activities	(330)	(328)	(43,267)
Cash and cash equivalents - net change from:
Operating, investing and financing activities	23,902	19,951	(25,378)
Balance at beginning of year	72,560	52,609	(77,987)
Balance at end of year	96,462	72,560	52,609
Cash paid for:
Interest			222
Income taxes, net	$ 611	$ 193	$ 302