Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
OPERATING ACTIVITIES:
Net Cash Provided By Operating Activities	$ 118,513,000	$ 103,141,000
INVESTING ACTIVITIES:
Investment in properties	(132,759,000)	(114,804,000)
Acquisitions of properties, net of cash acquired	(24,439,000)	(279,302,000)
Proceeds from dispositions of assets and depreciated homes, net	12,612,000	11,788,000
Issuance of notes and other receivables	(19,903,000)	0
Repayments of notes and other receivables	854,000	1,030,000
Repayments of notes and other receivables	(6,970,000)	(11,416,000)
Distributions from nonconsolidated affiliates	1,275,000	221,000
Net Cash Used For Investing Activities	(169,330,000)	(392,483,000)
FINANCING ACTIVITIES:
Issuance of common stock, OP units, and preferred OP units, net	(7,140,000)	(4,321,000)
Borrowings on lines of credit	1,163,965,000	1,428,948,000
Payments on lines of credit	(763,076,000)	(1,160,436,000)
Proceeds from issuance of other debt	230,000,000	265,000,000
Payments on other debt	(134,203,000)	(200,892,000)
Prepayment penalty on collateralized term loans	(3,250,000)	0
Distributions to stockholders, OP unit holders, and preferred OP unit holders	(71,859,000)	(65,145,000)
Payments for deferred financing costs	(3,328,000)	(1,000,000)
Net Cash Provided By Financing Activities	411,109,000	261,097,000
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(382,000)	158,000
Net change in cash, cash equivalents and restricted cash	359,910,000	(28,087,000)
Cash, cash equivalents and restricted cash, beginning of period	34,830,000	62,262,000	$ 62,262,000
Cash, Cash Equivalents and Restricted Cash, End of Period	394,740,000	34,175,000	34,830,000
SUPPLEMENTAL INFORMATION:
Cash paid for interest (net of capitalized interest of $2,258, $1,357 respectively)	32,464,000	32,711,000
Cash paid for interest on mandatorily redeemable debt	1,041,000	1,094,000
Cash paid (refunds) for income taxes	75,000	(60,000)
Noncash investing and financing activities
Reduction in secured borrowing balance	0	5,055,000
Change in distributions declared and outstanding	4,787,000	3,536,000
Conversion of common and preferred OP units	446,000	280,000
Noncash Or Part Noncash Acquisition, Noncash Financial Or Equity Instrument Consideration, Escrow		4,035,000	$ 0
Series D Preferred Stock [Member]
Noncash investing and financing activities
Stock Issued During Period, Value, New Issues, Series A-4 Preferred OP Units	0	51,930,000
Series A Preferred Stock [Member]
FINANCING ACTIVITIES:
Proceeds from (Payments for) Other Financing Activities	0	1,618,000
Series B-3 Preferred OP Units [Member]
FINANCING ACTIVITIES:
Redemption of Series A-4 preferred stock and OP units	0	(2,675,000)
Series E Preferred OP Units [Domain]
Noncash investing and financing activities
Stock Issued During Period, Value, New Issues, Series A-4 Preferred OP Units	$ 9,000,000	$ 0