Condensed Combined Statements of Income (Unaudited) for LLCs/LPs Accounted Under Equity Method (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Revenues	$ 23,226	$ 22,175
Net income	4,459	5,405
Our share of net income	371	252
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule Of Equity Method Investments [Line Items]
Revenues	2,226	1,930
Operating expenses	905	726
Depreciation and amortization	455	460
Interest, net	241	262
Net income	625	482
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule Of Equity Method Investments [Line Items]
Our share of net income	$ 371	$ 252