Reportable Segments - Income from Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues:
Other income	$ 75,354	$ 67,407	$ 56,144
Total revenues	1,526,166	1,489,423	1,447,080
Expenses:
Real estate taxes	81,966	77,993	74,145
Membership sales and marketing	22,063	20,974	20,317
Annual membership subscriptions
Revenues:
Contract revenue	65,883	65,379	63,215
Membership upgrade sales
Revenues:
Contract revenue	16,433	14,719	12,958
Property management
Expenses:
Cost of ancillary services	78,114	76,170	74,083
Operating Segments
Revenues:
Other income	75,354	67,407
Total revenues	1,508,654	1,471,683	1,431,097
Expenses:
Total expenses	774,996	780,170	778,035
NOI	733,658	691,513	653,062
Operating Segments | Property Operations
Revenues:
Rental income	1,219,534	1,164,333	1,103,357
Other income			56,144
Total revenues	1,422,422	1,361,792	1,291,467
Expenses:
Utility expense	159,058	155,160	147,169
Payroll	120,204	120,310	117,858
Repairs & maintenance	93,997	94,424	86,358
Insurance and other	101,510	94,618	86,379
Real estate taxes	81,966	77,993	74,145
Membership sales and marketing	22,063	20,974	20,317
Ancillary operating expenses	21,401	21,551	21,561
Total expenses	701,838	685,392	656,839
NOI	720,584	676,400	634,628
Operating Segments | Property Operations | Annual membership subscriptions
Revenues:
Contract revenue	65,883	65,379	63,215
Operating Segments | Property Operations | Membership upgrade sales
Revenues:
Contract revenue	16,433	14,719	12,958
Operating Segments | Property Operations | Gross revenues from ancillary services
Revenues:
Contract revenue	45,218	49,954	55,793
Expenses:
Cost of ancillary services	23,525	24,192	28,969
Operating Segments | Property Operations | Property management
Expenses:
Cost of ancillary services	78,114	76,170	74,083
Operating Segments | Home Sales and Rentals Operations
Revenues:
Rental income	13,718	14,626	15,244
Total revenues	86,232	109,891	139,630
Expenses:
Home selling expenses	6,243	5,902	5,760
Rental home operating and maintenance	5,669	5,400	5,393
Total expenses	73,158	94,778	121,196
NOI	13,074	15,113	18,434
Operating Segments | Home Sales and Rentals Operations | Home sales and brokered resales
Revenues:
Contract revenue	72,514	95,265	124,386
Expenses:
Cost of ancillary services	$ 61,246	$ 83,476	$ 110,043