CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
General and administrative expenses	$ 19,870	$ 16,861	$ 53,767	$ 49,033
Rental income	259	239	781	715
Interest income	454	0	1,040	2,160
Interest expense	536	493	1,516	1,576
VIE, Primary Beneficiary
General and administrative expenses	702	665	2,020	1,899
Rental income	235	239	721	715
Interest income	80	0	278	2,160
Interest expense	$ 528	$ 470	$ 1,499	$ 1,379