Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Rental income	$ 239,346	$ 223,566
Other income	11,059	10,370
Interest income	1,807	1,751
Income from other investments, net	643	986
Total revenues	280,476	259,090
Expenses:
Property operating and maintenance	83,634	77,948
Real estate taxes	16,841	15,323
Sales and marketing, gross	3,978	3,409
Membership sales commissions, deferred, net	(216)	(191)
Depreciation and amortization	39,024	37,977
Home selling expenses	1,213	1,083
General and administrative	10,855	9,909
Other expenses	588	427
Early debt retirement	1,054	0
Interest and related amortization	26,073	26,393
Total expenses	209,959	192,595
Gain on sale of real estate, net	0	52,507
Income before equity in income of unconsolidated joint ventures	70,517	119,002
Equity in income of unconsolidated joint ventures	207	1,533
Consolidated net income	70,724	120,535
Income allocated to non-controlling interests – Common OP Units	(3,849)	(7,226)
Net income available for Common Stockholders	66,875	113,309
Other comprehensive income (loss):
Adjustment for fair market value of swap	(1,333)	(931)
Consolidated comprehensive income	69,391	119,604
Comprehensive income allocated to non-controlling interests – Common OP Units	(3,776)	(7,170)
Comprehensive income attributable to Common Stockholders	$ 65,615	$ 112,434
Earnings per common share – basic (usd per share)	$ 0.37	$ 0.63
Earnings per common share – fully diluted (usd per share)	$ 0.37	$ 0.63
Weighted average common shares outstanding – basic (in shares)	181,729	179,560
Weighted average number of shares outstanding, diluted (in shares)	192,564	191,248
Annual membership subscriptions
Revenues:
Contract revenue	$ 13,073	$ 12,316
Membership upgrade sales current period, gross
Revenues:
Contract revenue	4,843	3,838
Membership upgrade sales upfront payments, deferred, net
Revenues:
Contract revenue	(2,542)	(1,771)
Gross revenues from home sales
Revenues:
Contract revenue	11,309	6,475
Expenses:
Cost of services	11,911	6,632
Brokered resale and ancillary services revenues, net
Revenues:
Contract revenue	938	1,559
Property management
Expenses:
Cost of services	$ 15,004	$ 13,685