CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 110,615	$ 163,154
Restricted cash and cash equivalents	3,123	20,545
Accounts and other receivables, net	13,801	23,739
Inventories, net	30,410	28,366
Prepaid expenses and other	1,954	2,154
Total current assets	159,903	237,958
Other assets:
Restricted cash and cash equivalents	315	491
Note receivable from affiliate	8,000	9,300
Marketable securities	14,433	28,015
Investment in Kronos Worldwide, Inc.	230,088	250,278
Goodwill	27,156	27,156
Other assets, net	616	1,034
Total other assets	280,608	316,274
Property and equipment:
Land	5,390	5,390
Buildings	23,634	23,262
Equipment	78,021	75,605
Construction in progress	477	589
Property and equipment, gross	107,522	104,846
Less accumulated depreciation	83,813	80,820
Net property and equipment	23,709	24,026
Total assets	464,220	578,258
Current liabilities:
Accounts payable	2,697	3,758
Accrued litigation settlement		16,431
Accrued and other current liabilities	15,021	12,032
Accrued environmental remediation and related costs	2,071	58,135
Payables to affiliates	791	706
Total current liabilities	20,580	91,062
Noncurrent liabilities:
Long-term debt from affiliate	500	500
Accrued environmental remediation and related costs	10,969	11,143
Deferred income taxes	54,103	53,391
Other	1,277	6,259
Total noncurrent liabilities	66,849	71,293
NL stockholders' equity:
Preferred stock, no par value; 5,000 shares authorized; none issued
Common stock; $.125 par value; 150,000 shares authorized; 48,848 and 48,863 shares issued and outstanding	6,107	6,105
Additional paid-in capital	299,349	299,099
Retained earnings	249,380	315,056
Accumulated other comprehensive loss	(196,067)	(223,356)
Total NL stockholders' equity	358,769	396,904
Noncontrolling interest in subsidiary	18,022	18,999
Total equity	376,791	415,903
Total liabilities and equity	464,220	578,258
Commitments and contingencies (Notes 14 and 17)