Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Income Statement (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Net sales	$ 166,562	$ 140,815	$ 114,537
Cost of sales	117,763	98,066	81,689
Income from operations	13,731	10,491	2,357
Income tax expense (benefit)	2,785	7,479	(2,515)
Net income	33,844	51,188	14,680
Kronos | Reportable Legal Entities
Schedule Of Equity Method Investments [Line Items]
Net sales	1,930,200	1,939,400	1,638,800
Cost of sales	1,539,100	1,493,200	1,287,600
Income from operations	159,600	187,100	116,200
Income tax expense (benefit)	29,400	40,500	16,100
Net income	$ 104,500	$ 112,900	$ 63,900