Condensed Combined Statements of Income (Unaudited) for LLCs/LPs Accounted Under Equity Method (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Schedule Of Equity Method Investments [Line Items]
Revenues	$ 24,548	$ 25,141
Net income	4,777	5,300
Our share of net income	412	384
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule Of Equity Method Investments [Line Items]
Revenues	2,302	2,250
Operating expenses	886	898
Depreciation and amortization	472	474
Interest, net	137	159
Net income	807	719
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule Of Equity Method Investments [Line Items]
Our share of net income	$ 412	$ 384