CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 163,154	$ 111,522
Restricted cash and cash equivalents	20,545	2,917
Marketable securities		53,149
Accounts and other receivables, net	23,739	17,101
Receivables from affiliates		628
Inventories, net	28,366	30,712
Prepaid expenses and other	2,154	2,235
Total current assets	237,958	218,264
Other assets:
Restricted cash and cash equivalents	491	26,943
Note receivable from affiliate	9,300	10,600
Marketable securities	28,015	18,194
Investment in Kronos Worldwide, Inc.	250,278	247,582
Goodwill	27,156	27,156
Other assets, net	1,034	2,060
Total other assets	316,274	332,535
Property and equipment:
Land	5,390	5,390
Buildings	23,262	23,239
Equipment	75,605	74,315
Construction in progress	589	676
Property and equipment, gross	104,846	103,620
Less accumulated depreciation	80,820	77,757
Net property and equipment	24,026	25,863
Total assets	578,258	576,662
Current liabilities:
Accounts payable	3,758	3,148
Accrued litigation settlement	16,431	11,830
Accrued and other current liabilities	12,032	13,182
Accrued environmental remediation and related costs	58,135	1,655
Payables to affiliates	706	634
Total current liabilities	91,062	30,449
Noncurrent liabilities:
Long-term debt from affiliate	500	500
Accrued environmental remediation and related costs	11,143	89,451
Long-term litigation settlement		16,122
Deferred income taxes	53,391	41,733
Accrued pension costs	76	1,571
Other	6,183	5,074
Total noncurrent liabilities	71,293	154,451
NL stockholders' equity:
Preferred stock, no par value; 5,000 shares authorized; none issued
Common stock; $.125 par value; 150,000 shares authorized; 48,833 and 48,848 shares issued and outstanding	6,105	6,103
Additional paid-in capital	299,099	298,868
Retained earnings	315,056	284,462
Accumulated other comprehensive loss	(223,356)	(219,621)
Total NL stockholders' equity	396,904	369,812
Noncontrolling interest in subsidiary	18,999	21,950
Total equity	415,903	391,762
Total liabilities and equity	578,258	576,662
Commitments and contingencies (Notes 14 and 17)