Reportable Segments - Income from Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Other income	$ 67,407	$ 56,144	$ 50,298
Total revenues	1,489,423	1,447,080	1,316,403
Expenses:
Real estate taxes	77,993	74,145	72,671
Membership sales and marketing	20,974	20,317	18,668
Annual membership subscriptions
Revenues:
Contract revenue	65,379	63,215	58,251
Membership upgrade sales
Revenues:
Contract revenue	14,719	12,958	11,191
Property management
Expenses:
Cost of ancillary services	76,170	74,083	65,979
Operating Segments
Revenues:
Other income	67,407	56,144
Total revenues	1,471,683	1,431,097	1,304,832
Expenses:
Total expenses	780,170	778,035	700,462
Income from segment operations	691,513	653,062	604,370
Operating Segments | Property Operations
Revenues:
Rental income	1,164,333	1,103,357	1,015,879
Other income			50,298
Total revenues	1,361,792	1,291,467	1,187,535
Expenses:
Property operating and maintenance	464,512	437,764	393,256
Real estate taxes	77,993	74,145	72,671
Membership sales and marketing	20,974	20,317	18,668
Ancillary operating expenses	21,551	21,561	18,400
Total expenses	685,392	656,839	594,503
Income from segment operations	676,400	634,628	593,032
Operating Segments | Property Operations | Annual membership subscriptions
Revenues:
Contract revenue	65,379	63,215	58,251
Operating Segments | Property Operations | Membership upgrade sales
Revenues:
Contract revenue	14,719	12,958	11,191
Operating Segments | Property Operations | Gross revenues from ancillary services
Revenues:
Contract revenue	49,954	55,793	51,916
Expenses:
Cost of ancillary services	24,192	28,969	25,529
Operating Segments | Property Operations | Property management
Expenses:
Cost of ancillary services	76,170	74,083	65,979
Operating Segments | Home Sales and Rentals Operations
Revenues:
Rental income	14,626	15,244	16,696
Total revenues	109,891	139,630	117,297
Expenses:
Property operating and maintenance	5,400	5,393	5,727
Home selling expenses	5,902	5,760	5,138
Total expenses	94,778	121,196	105,959
Income from segment operations	15,113	18,434	11,338
Operating Segments | Home Sales and Rentals Operations | Home sales and brokered resales
Revenues:
Contract revenue	95,265	124,386	100,601
Expenses:
Cost of ancillary services	$ 83,476	$ 110,043	$ 95,094