Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Balance Sheet (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 197,349	$ 193,648
Property and equipment, net	29,897	29,182
Other noncurrent assets	2,746	2,753
Total assets	614,721	596,152
Current liabilities	27,506	30,597
Accrued pension costs	3,620	3,722
Other	3,423	3,490
Stockholders' equity	380,431	362,470
Total liabilities and equity	614,721	596,152
Kronos
Schedule Of Equity Method Investments [Line Items]
Current assets	1,279,500	1,258,000
Property and equipment, net	503,800	503,400
Investment in TiO2 joint venture	105,700	101,900
Other noncurrent assets	146,300	149,500
Total assets	2,035,300	2,012,800
Current liabilities	281,100	288,800
Long-term debt	443,800	449,800
Accrued pension costs	282,300	287,400
Other	114,500	116,600
Stockholders' equity	913,600	870,200
Total liabilities and equity	$ 2,035,300	$ 2,012,800