CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 109,419	$ 116,259
Restricted cash and cash equivalents	2,913	3,727
Accrued insurance recovery related to litigation settlement		15,000
Accounts and other receivables, net	13,797	12,440
Inventories, net	18,826	17,102
Receivable from affiliates	648	792
Prepaid expenses and other	1,149	1,324
Total current assets	146,752	166,644
Other assets:
Restricted cash and cash equivalents	25,310	1,003
Notes receivable from affiliate	36,700	34,000
Marketable securities	27,309	27,740
Investment in Kronos Worldwide, Inc.	257,717	255,565
Goodwill	27,156	27,156
Other assets, net	3,187	3,108
Total other assets	377,379	348,572
Property and equipment:
Land	4,940	5,151
Buildings	22,856	22,842
Equipment	67,595	67,446
Construction in progress	963	603
Property and equipment, gross	96,354	96,042
Less accumulated depreciation	65,137	64,016
Net property and equipment	31,217	32,026
Total assets	555,348	547,242
Current liabilities:
Accounts payable	4,987	4,831
Accrued litigation settlement	11,774	60,000
Accrued and other current liabilities	9,797	10,854
Accrued environmental remediation and related costs	3,168	5,027
Payable to affiliates	567	567
Income taxes	64	44
Total current liabilities	30,357	81,323
Noncurrent liabilities:
Long-term debt from affiliate	500	500
Accrued pension costs	7,689	10,389
Accrued environmental remediation and related costs	91,808	93,184
Long-term litigation settlement	59,797	17,000
Deferred income taxes	31,956	31,373
Other	9,780	9,915
Total noncurrent liabilities	201,530	162,361
NL stockholders' equity:
Common stock	6,094	6,090
Additional paid-in capital	299,102	301,139
Retained earnings	244,700	225,156
Accumulated other comprehensive loss	(248,812)	(248,270)
Total NL stockholders' equity	301,084	284,115
Noncontrolling interest in subsidiary	22,377	19,443
Total equity	323,461	303,558
Total liabilities and equity	555,348	547,242
Commitments and contingencies (Note 14)