Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
OPERATING ACTIVITIES:
NET CASH PROVIDED BY OPERATING ACTIVITIES		$ 301,204	$ 226,142
INVESTING ACTIVITIES:
Investment in properties		(257,017)	(203,233)
Acquisitions of properties, net of cash acquired		(305,724)	(70,328)
Proceeds from dispositions of assets and depreciated homes, net		34,825	6,592
Purchases of notes receivable		(216)	(2,480)
Repayments of notes and other receivables		2,880	1,764
Investment in affiliates		(19,851)	0
NET CASH USED FOR INVESTING ACTIVITIES		(545,103)	(267,685)
FINANCING ACTIVITIES:
Issuance of common stock, OP units, and preferred OP units, net		624,152	457,638
Borrowings on lines of credit		1,187,098	575,351
Payments on lines of credit		(1,228,907)	(675,695)
Proceeds from issuance of other debt		228,336	85,081
Payments on other debt		(273,380)	(72,024)
Prepayment penalty on debt		(2,024)	(759)
Redemption of Series A-4 preferred stock and OP units			(24,698)
Distributions to stockholders, OP unit holders, and preferred OP unit holders		(177,926)	(165,937)
Payments for deferred financing costs		(1,645)	(5,589)
Proceeds from (Payments for) Other Financing Activities		(2,021)	0
NET CASH PROVIDED BY FINANCING ACTIVITIES		349,578	173,368
Effect of exchange rate changes on cash, cash equivalents and restricted cash		(94)	253
Net change in cash, cash equivalents and restricted cash		105,585	132,078
Cash, cash equivalents and restricted cash, beginning of period	$ 23,509	23,509	25,313	$ 25,313
Cash, cash equivalents and restricted cash, end of period		129,094	157,391	23,509
SUPPLEMENTAL INFORMATION:
Cash paid for interest (net of capitalized interest of $3,216 and $1,981 respectively)		94,801	92,362
Cash paid for interest on mandatorily redeemable debt		2,551	2,361
Cash paid (refunds) for income taxes		741	(53)
Noncash investing and financing activities:
Reduction in secured borrowing balance		16,093	17,674
Change in distributions declared and outstanding		7,991	4,527
Conversion of common and preferred OP units		1,489	3,240
Conversion of Series A-4 Preferred Stock		675	4,720
Acquisitions - Common stock and OP units issued		0	28,410
Acquisitions - debt assumed		3,120		$ 4,592
Acquisitions - receivable due from seller		0	5,000
Series B-3 Preferred OP Units [Member]
FINANCING ACTIVITIES:
Redemption of Series A-4 preferred stock and OP units		(4,105)	0
Series B Preferred Stock [Member]
Noncash investing and financing activities:
Noncash Or Part Noncash Acquisition, Noncash Financial Or Equity Instrument Consideration, Value Of Shares Issued		21,976	0
Series A Preferred Stock [Member]
Noncash investing and financing activities:
Noncash Or Part Noncash Acquisition, Noncash Financial Or Equity Instrument Consideration, Value Of Shares Issued	$ 35,277		$ 0
Series A-4 Preferred Stock and OP Units [Member]
FINANCING ACTIVITIES:
Redemption of Series A-4 preferred stock and OP units		$ 0