Condensed Combined Statement of Income for LLCs/LPs Accounted Under Equity Method (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Revenues	$ 22,175	$ 20,699
Net income	5,405	5,586
Our share of net income	252	471
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule Of Equity Method Investments [Line Items]
Revenues	1,930	2,788
Operating expenses	726	1,107
Depreciation and amortization	460	521
Interest, net	262	431
Net income	482	729
Our share of net income	$ 252	$ 471