Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Income from real property	$ 216,779	$ 197,211
Revenues	287,330	257,975
Income From Real Property [Member]
Disaggregation of Revenue [Line Items]
Income from real property	216,779	197,211
Revenue From Home Sales [Member]
Disaggregation of Revenue [Line Items]
Income from real property	39,618	34,900
Rental Home Revenue [Member]
Disaggregation of Revenue [Line Items]
Income from real property	13,971	13,020
Ancillary Revenues [Member]
Disaggregation of Revenue [Line Items]
Income from real property	8,482	6,568
Interest [Member]
Disaggregation of Revenue [Line Items]
Income from real property	4,800	5,316
Brokerage Commissions And Other Revenues, Net [Member]
Disaggregation of Revenue [Line Items]
Income from real property	3,680	960
Real Property Operations Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	233,741	210,055
Real Property Operations Segment [Member] | Income From Real Property [Member]
Disaggregation of Revenue [Line Items]
Income from real property	216,779	197,211
Real Property Operations Segment [Member] | Revenue From Home Sales [Member]
Disaggregation of Revenue [Line Items]
Income from real property	0	0
Real Property Operations Segment [Member] | Rental Home Revenue [Member]
Disaggregation of Revenue [Line Items]
Income from real property	0	0
Real Property Operations Segment [Member] | Ancillary Revenues [Member]
Disaggregation of Revenue [Line Items]
Income from real property	8,482	6,568
Real Property Operations Segment [Member] | Interest [Member]
Disaggregation of Revenue [Line Items]
Income from real property	4,800	5,316
Real Property Operations Segment [Member] | Brokerage Commissions And Other Revenues, Net [Member]
Disaggregation of Revenue [Line Items]
Income from real property	3,680	960
Home Sales and Home Rentals Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	53,589	47,920
Home Sales and Home Rentals Segment [Member] | Income From Real Property [Member]
Disaggregation of Revenue [Line Items]
Income from real property	0	0
Home Sales and Home Rentals Segment [Member] | Revenue From Home Sales [Member]
Disaggregation of Revenue [Line Items]
Income from real property	39,618	34,900
Home Sales and Home Rentals Segment [Member] | Rental Home Revenue [Member]
Disaggregation of Revenue [Line Items]
Income from real property	13,971	13,020
Home Sales and Home Rentals Segment [Member] | Ancillary Revenues [Member]
Disaggregation of Revenue [Line Items]
Income from real property	0	0
Home Sales and Home Rentals Segment [Member] | Interest [Member]
Disaggregation of Revenue [Line Items]
Income from real property	0	0
Home Sales and Home Rentals Segment [Member] | Brokerage Commissions And Other Revenues, Net [Member]
Disaggregation of Revenue [Line Items]
Income from real property	$ 0	$ 0