CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 116,259	$ 98,316
Restricted cash and cash equivalents	3,727	3,370
Accrued insurance recovery related to litigation settlement	15,000
Accounts and other receivables, net	12,440	10,670
Receivable from affiliate	792	1,767
Inventories, net	17,102	15,382
Prepaid expenses and other	1,324	1,162
Total current assets	166,644	130,667
Other assets:
Note receivable from affiliate	34,000	38,200
Marketable securities	27,740	88,681
Investment in Kronos Worldwide, Inc.	255,565	229,543
Goodwill	27,156	27,156
Other assets, net	4,111	4,843
Total other assets	348,572	388,423
Property and equipment:
Land	5,151	5,146
Buildings	22,842	23,044
Equipment	67,446	67,926
Construction in progress	603	569
Property and equipment, gross	96,042	96,685
Less accumulated depreciation	64,016	64,159
Net property and equipment	32,026	32,526
Total assets	547,242	551,616
Current liabilities:
Accounts payable	4,831	4,116
Accrued litigation settlement	60,000
Accrued and other current liabilities	10,854	9,707
Accrued environmental remediation and related costs	5,027	5,302
Payable to affiliates	567	429
Income taxes	44	30
Total current liabilities	81,323	19,584
Noncurrent liabilities:
Long-term debt from affiliate	500	500
Accrued pension costs	10,389	12,194
Accrued environmental remediation and related costs	93,184	106,607
Deferred income taxes	31,373	49,315
Long-term litigation settlement	17,000
Other	9,915	10,338
Total noncurrent liabilities	162,361	178,954
NL stockholders' equity:
Preferred stock, no par value; 5,000 shares authorized; none issued
Common stock, $.125 par value; 150,000 shares authorized; 48,715 and 48,727 shares issued and outstanding	6,090	6,089
Additional paid-in capital	301,139	300,866
Retained earnings	225,156	220,104
Accumulated other comprehensive loss	(248,270)	(191,737)
Total NL stockholders' equity	284,115	335,322
Noncontrolling interest in subsidiary	19,443	17,756
Total equity	303,558	353,078
Total liabilities and equity	547,242	551,616
Commitments and contingencies (Notes 14 and 17)