Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash Flows From Operating Activities:
Consolidated net income	$ 104,206	$ 97,189
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Gain on sale of property, net of tax	(929)	(41,544)
Extinguishment of Debt, Amount	5,087	37,911
Depreciation expense	83,821	83,872
Amortization of in-place leases	3,791	803
Amortization of loan costs	3,655	4,039
Debt premium amortization	(3,956)	(5,597)
Equity in income of unconsolidated joint ventures	(3,768)	(1,624)
Distributions from unconsolidated joint ventures	2,869	1,251
Amortization of stock-related compensation	4,998	4,332
Revenue recognized from right-to-use contract upfront payments	(5,653)	(5,453)
Commission expense recognized related to right-to-use contracts	2,100	1,933
Accrued Long Term Incentive Plan Compensation	1,425	1,431
Provision for uncollectible rents receivable	(219)	380
Changes in assets and liabilities:
Notes receivable activity, net	(1,345)	48
Deferred commission expense	(4,734)	(3,757)
Escrow deposits and other assets	13,362	(1,299)
Accrued payroll and other operating expenses, net	15,436	14,759
Deferred revenue - upfront payments from right-to-use contracts	9,956	9,899
Deferred revenue - right-to-use annual payments	(374)	367
Rents received in advance and security deposits	(1,386)	(1,204)
Net cash provided by operating activities	228,342	197,736
Cash Flows From Investing Activities:
Real estate acquisition	(54,645)	(116,359)
Proceeds from Sale of Other Real Estate	2,102	157,975
Payments for (Proceeds from) Delayed Tax Exempt Exchange	10,576	(13,755)
Cash Received from Joint Venture	411	0
Payments to Acquire Interest in Joint Venture	(3,489)	(1,149)
Proceeds from Collection of Notes Receivable	12,524	9,270
Issuance of Notes Receivable	(7,266)	(7,792)
Capital improvements	(41,645)	(48,571)
Net cash used in investing activities	(81,432)	(20,381)
Cash Flows From Financing Activities:
Net proceeds from stock options and employee stock purchase plan	896	774
Payments of Ordinary Dividends, Common Stock	(75,077)	(41,712)
Payments of Ordinary Dividends, Noncontrolling Interest	(6,772)	(3,728)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(6,949)	(6,951)
Repayments of Lines of Credit	0	(20,000)
Proceeds from Lines of Credit	0	20,000
Principal payments and mortgage debt payoff	(165,578)	(415,977)
Proceeds from Issuance of Long-term Debt	169,000	347,060
Debt issuance costs	(11,559)	(41,919)
Equity issuance costs	(154)	(502)
Net cash (used in) provided by financing activities	(96,193)	(162,955)
Cash, Period Increase (Decrease)	50,717	14,400
Cash	109,144	51,526
Supplemental Information:
Cash paid during the period for interest	90,376	92,904
Non-cash activities (increase/(decrease)):
Capital improvements - used homes acquired by repossessions	1,026	1,724
Net repayments of notes receivable - used homes acquired by repossessions	1,026	1,724
Building and other depreciable property - reclassification of rental homes	16,881	10,011
Escrow deposits and other assets - reclassification of rental homes	(16,881)	(10,011)
Noncash or Part Noncash Acquisition, Fixed Assets Acquired	73,597	126,186
Noncash or Part Noncash Acquisition, Deferred Finance Costs	180	0
Noncash or Part Noncash Acquisition, Other Liabilities Assumed	2,345	506
Noncash or Part Noncash Acquisition, Payables Assumed	1,848	446
Noncash or Part Noncash Acquisition, Other Assets Acquired	(371)	(811)
Noncash or Part Noncash Acquisition, Debt Assumed	14,564	0
Noncash, Issuance of Common OP Units	0	9,686
Real Estate Owned, Transfer from Real Estate Owned	86,309	113,050
Transfer of Loans Receivable	0	6,507
Disposition of Other Assets	$ 0	$ (2,166)