Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Community base rental income	$ 128,579	$ 121,964	$ 255,318	$ 242,656
Rental home income	3,561	3,632	7,076	7,237
Resort base rental income	55,231	50,055	119,485	111,123
Interest income	1,862	1,798	3,812	3,568
Income from other investments, net	3,413	1,109	4,353	1,866
Total revenues	240,502	221,312	486,527	453,701
Expenses:
Property operating and maintenance	80,091	72,901	154,999	140,955
Rental home operating and maintenance	1,629	1,657	3,053	3,208
Real estate taxes	13,440	13,943	27,575	27,980
Sales and marketing, gross	3,305	2,894	6,117	5,584
Right-to-use contract commissions, deferred, net	(262)	(112)	(286)	(196)
Depreciation on real estate assets and rental homes	32,452	30,247	63,774	60,357
Amortization of in-place leases	1,893	958	2,945	1,990
Home selling expenses	973	929	2,048	1,854
General and administrative	9,669	8,461	17,707	15,834
Other expenses	367	271	710	490
Interest and related amortization	26,285	24,822	51,988	49,701
Total expenses	192,946	177,889	375,989	348,354
Income before equity in income of unconsolidated joint ventures	47,556	43,423	110,538	105,347
Equity in income of unconsolidated joint ventures	1,613	1,040	2,808	2,190
Consolidated net income	49,169	44,463	113,346	107,537
Income allocated to non-controlling interests – Common OP Units	(3,024)	(2,649)	(6,979)	(6,539)
Net income available for Common Stockholders	46,137	39,498	106,359	96,385
Other comprehensive income:
Adjustment for fair market value of swap	764	30	2,637	257
Consolidated comprehensive income	49,933	44,493	115,983	107,794
Comprehensive income attributable to Common Stockholders	$ 46,854	$ 39,526	$ 108,834	$ 96,626
Earnings per Common Share – Basic:
Net income available for Common Stockholders (usd per share)	$ 0.52	$ 0.46	$ 1.20	$ 1.12
Earnings per Common Share - Fully Diluted:
Net income available for Common Stockholders (usd per share)	0.52	0.45	1.20	1.11
Distributions declared per Common Share outstanding (usd per share)	$ 0.5500	$ 0.4875	$ 1.1	$ 0.975
Weighted average Common Shares outstanding – basic (shares)	88,549	86,763	88,537	86,408
Weighted average Common Shares outstanding – fully diluted (shares)	94,623	93,063	94,600	93,041
Redeemable Perpetual Preferred Stock
Expenses:
Redeemable perpetual preferred stock dividends	$ (8)	$ (2,316)	$ (8)	$ (4,613)
Non- controlling interests – Common OP Units
Other comprehensive income:
Comprehensive income allocated to non-controlling interests – Common OP Units	(3,071)	(2,651)	(7,141)	(6,555)
Right-to-use annual payments
Revenues:
Contract revenue	11,891	11,350	23,410	22,602
Right-to-use contracts current period, gross
Revenues:
Contract revenue	3,944	3,798	7,106	7,004
Right-to-use contract upfront payments, deferred, net
Revenues:
Contract revenue	(2,021)	(1,321)	(3,306)	(2,096)
Utility and other income
Revenues:
Utility and other income	24,320	20,650	49,841	42,776
Gross revenues from home sales
Revenues:
Contract revenue	9,105	7,833	17,414	14,860
Expenses:
Cost of services	9,632	7,895	18,206	15,014
Brokered resale revenues and ancillary services revenues, net
Revenues:
Contract revenue	617	444	2,018	2,105
Property management
Expenses:
Cost of services	$ 13,472	$ 13,023	$ 27,153	$ 25,583