CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
General and administrative expenses	$ 17,192	$ 16,715	$ 33,821	$ 32,172
Rental income	275	238	522	476
Interest income	519	847	586	2,160
Interest expense	(573)	(610)	(980)	(1,083)
VIE, Primary Beneficiary
General and administrative expenses	647	671	1,318	1,234
Rental income	239	238	486	476
Interest income	182	847	198	2,187
Interest expense	$ (565)	$ (488)	$ (971)	$ (936)