Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Community base rental income	$ 464,745	$ 442,046	$ 426,886
Rental home income	14,107	14,012	14,827
Resort base rental income	201,533	184,760	163,968
Right-to-use annual payments	45,035	44,443	44,860
Right-to-use contracts current period, gross	12,327	12,783	13,892
Right-to-use contract upfront payments, deferred, net	(3,079)	(4,231)	(5,501)
Utility and other income	81,427	76,153	70,209
Gross revenues from home sales	37,191	33,150	28,418
Brokered resale revenues and ancillary services revenues, net	2,994	4,149	3,850
Interest income	6,845	7,030	8,347
Income from other investments, net	7,310	7,359	7,053
Total revenues	870,435	821,654	776,809
Expenses:
Property operating and maintenance	268,249	254,668	243,914
Rental home operating and maintenance	6,883	7,167	7,441
Real estate taxes	53,036	50,962	48,714
Sales and marketing, gross	11,056	11,751	12,418
Right-to-use contract commissions, deferred, net	(223)	(1,556)	(2,617)
Property management	47,083	44,528	42,638
Depreciation on real estate assets and rental homes	117,400	113,609	111,065
Amortization of in-place leases	3,373	2,358	3,999
Cost of home sales	37,456	32,279	26,747
Home selling expenses	3,575	3,191	2,342
General and administrative	31,004	30,644	27,410
Property rights initiatives and other, net	4,986	2,986	2,923
Early debt retirement	0	16,913	5,087
Interest and related amortization	102,030	105,731	112,295
Total property operations expenses	685,908	675,231	644,376
Income from continuing operations before equity in income of unconsolidated joint ventures and gain on sale of property	184,527	146,423	132,433
Equity in income of unconsolidated joint ventures	2,605	4,089	4,578
Gain on sale of property	0	0	1,457
Consolidated net income	187,132	150,512	138,468
Income allocated to non-controlling interests – Common OP Units	(13,869)	(11,141)	(10,463)
Series C Redeemable Perpetual Preferred Stock Dividends	(9,226)	(9,226)	(9,274)
Net income available for Common Stockholders	164,037	130,145	118,731
Other comprehensive income (loss) (OCI):
Adjustment for fair market value of swap	326	(172)	546
Consolidated comprehensive income	187,458	150,340	139,014
Comprehensive income allocated to non-controlling interests – Common OP Units	(13,893)	(11,126)	(10,506)
Series C Redeemable Perpetual Preferred Stock Dividends	(9,226)	(9,226)	(9,274)
Comprehensive income attributable to Common Stockholders	$ 164,339	$ 129,988	$ 119,234
Earnings per Common Share – Basic:
Net income available for Common Stockholders (usd per share)	$ 1.93	$ 1.55	$ 1.42
Earnings per Common Share – Fully Diluted:
Net income available for Common Stockholders (usd per share)	$ 1.92	$ 1.54	$ 1.41
Weighted average Common Shares outstanding – basic (shares)	84,778	84,031	83,362
Weighted average Common Shares outstanding – fully diluted (shares)	92,569	91,907	91,511
6.75% Series C Cumulative Redeemable Perpetual Preferred Stock
Expenses:
Series C Redeemable Perpetual Preferred Stock Dividends	$ (9,226)	$ (9,226)	$ (9,274)
Other comprehensive income (loss) (OCI):
Series C Redeemable Perpetual Preferred Stock Dividends	$ (9,226)	$ (9,226)	$ (9,274)