Real Estate Acquisitions, Schedule of Purchase Price Allocation (Details)	3 Months Ended	6 Months Ended
	Mar. 31, 2021 USD ($)	Jun. 30, 2021 USD ($) marina	Dec. 31, 2020 USD ($) segment
Business Acquisition [Line Items]
Capitalized transaction costs		$ 5,600,000
At acquistion date
Investment in property		598,975,000	$ 2,339,368,000
Inventory of manufactured homes, boat parts and retail related items		331,000	9,942,000
In-place leases, goodwill and other intangible assets		15,574,000	694,264,000
Other assets / (liabilities), net		(12,053,000)	42,231,000
Total identifiable assets acquired and liabilities assumed		602,827,000	3,001,343,000
Consideration
Cash and escrow	$ 1,923,855,000	578,827,000
Debt assumed			$ 837,800,000
Temporary and permanent equity	239,688,000	24,000,000
Total consideration	3,001,343,000	$ 602,827,000
Number of marinas owned (in marinas)		2	99
Islamorada and Angler House
Consideration
Asset Acquisition, Payments to Acquire Businesses, Gross		$ 17,975,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets (Liabilities)		(317,000)
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Goodwill And Other Intangible Assets		269,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		18,001,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Inventory		22,000
Prime Martha's Vineyard
Consideration
Asset Acquisition, Payments to Acquire Businesses, Gross		21,950,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets (Liabilities)		(573,000)
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Goodwill And Other Intangible Assets		127,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		22,258,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Inventory		$ 138,000
Number of marinas owned (in marinas) | marina		2
Cape Cod
At acquistion date
Investment in property			$ 13,350,000
Inventory of manufactured homes, boat parts and retail related items			0
In-place leases, goodwill and other intangible assets			150,000
Other assets / (liabilities), net			295,000
Total identifiable assets acquired and liabilities assumed			13,205,000
Consideration
Cash and escrow	4,205,000
Debt assumed			0
Temporary and permanent equity	9,000,000
Total consideration	13,205,000
Blue Water Beach Resort
At acquistion date
Investment in property			11,364,000
Inventory of manufactured homes, boat parts and retail related items			0
In-place leases, goodwill and other intangible assets			80,000
Other assets / (liabilities), net			391,000
Total identifiable assets acquired and liabilities assumed			11,053,000
Consideration
Cash and escrow	11,053,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	11,053,000
Forest Springs
At acquistion date
Investment in property			51,949,000
Inventory of manufactured homes, boat parts and retail related items			1,337,000
In-place leases, goodwill and other intangible assets			2,160,000
Other assets / (liabilities), net			107,000
Total identifiable assets acquired and liabilities assumed			55,339,000
Consideration
Cash and escrow	36,260,000
Debt assumed			0
Temporary and permanent equity	19,079,000
Total consideration	55,339,000
Cherrystone Family Camping Resort
At acquistion date
Investment in property			16,792,000
Inventory of manufactured homes, boat parts and retail related items			0
In-place leases, goodwill and other intangible assets			0
Other assets / (liabilities), net			230,000
Total identifiable assets acquired and liabilities assumed			16,562,000
Consideration
Cash and escrow	16,562,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	16,562,000
Beachwood Resort
At acquistion date
Investment in property			34,000,000
Inventory of manufactured homes, boat parts and retail related items			0
In-place leases, goodwill and other intangible assets			0
Other assets / (liabilities), net			155,000
Total identifiable assets acquired and liabilities assumed			33,845,000
Consideration
Cash and escrow	33,845,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	33,845,000
Woodsmoke [Member]
At acquistion date
Investment in property			25,120,000
Inventory of manufactured homes, boat parts and retail related items			40,000
In-place leases, goodwill and other intangible assets			840,000
Other assets / (liabilities), net			461,000
Total identifiable assets acquired and liabilities assumed			25,539,000
Consideration
Cash and escrow	25,539,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	25,539,000
Jellystone Lone Star [Member]
At acquistion date
Investment in property			21,000,000
Inventory of manufactured homes, boat parts and retail related items			0
In-place leases, goodwill and other intangible assets			0
Other assets / (liabilities), net			703,000
Total identifiable assets acquired and liabilities assumed			20,297,000
Consideration
Cash and escrow	20,297,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	20,297,000
El Capitan & Ocean Mesa [Member]
At acquistion date
Investment in property		$ 37,647,000	69,690,000
Inventory of manufactured homes, boat parts and retail related items		0	0
In-place leases, goodwill and other intangible assets		10,073,000	0
Other assets / (liabilities), net		(703,000)	10,321,000
Total identifiable assets acquired and liabilities assumed		47,017,000	59,369,000
Consideration
Cash and escrow	32,108,000	47,017,000
Debt assumed			0
Temporary and permanent equity	27,261,000	0
Total consideration	59,369,000	47,017,000
Highland Green Estates & Troy Villa [Member]
At acquistion date
Investment in property			60,988,000
Inventory of manufactured homes, boat parts and retail related items			1,679,000
In-place leases, goodwill and other intangible assets			2,030,000
Other assets / (liabilities), net			15,000
Total identifiable assets acquired and liabilities assumed			64,682,000
Consideration
Cash and escrow	64,682,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	64,682,000
Blue Water
At acquistion date
Investment in property		9,000,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		0
Other assets / (liabilities), net		(151,000)
Total identifiable assets acquired and liabilities assumed		8,849,000
Consideration
Cash and escrow		8,849,000
Temporary and permanent equity		0
Total consideration		8,849,000
Tranquility MHC
At acquistion date
Investment in property		1,250,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		0
Other assets / (liabilities), net		(1,000)
Total identifiable assets acquired and liabilities assumed		1,249,000
Consideration
Cash and escrow		1,249,000
Temporary and permanent equity		0
Total consideration		1,249,000
Pleasant Beach Campground
At acquistion date
Investment in property		1,531,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		57,000
Other assets / (liabilities), net		1,000
Total identifiable assets acquired and liabilities assumed		1,589,000
Consideration
Cash and escrow		1,589,000
Temporary and permanent equity		0
Total consideration		1,589,000
Cherrystone Family Camping
At acquistion date
Investment in property		59,669,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		231,000
Other assets / (liabilities), net		(2,029,000)
Total identifiable assets acquired and liabilities assumed		57,871,000
Consideration
Cash and escrow		57,871,000
Temporary and permanent equity		0
Total consideration		57,871,000
Beachwood
At acquistion date
Investment in property		14,004,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		211,000
Other assets / (liabilities), net		(7,616,000)
Total identifiable assets acquired and liabilities assumed		6,599,000
Consideration
Cash and escrow		6,599,000
Temporary and permanent equity		0
Total consideration		$ 6,599,000
Gig Harbor
At acquistion date
Investment in property			15,250,000
Inventory of manufactured homes, boat parts and retail related items			0
In-place leases, goodwill and other intangible assets			0
Other assets / (liabilities), net			22,000
Total identifiable assets acquired and liabilities assumed			15,228,000
Consideration
Cash and escrow	15,228,000
Debt assumed			0
Temporary and permanent equity	0
Total consideration	15,228,000
Safe Harbor Marinas
At acquistion date
In-place leases, goodwill and other intangible assets			5,700,000
Other assets / (liabilities), net			26,831,000
Total identifiable assets acquired and liabilities assumed			2,040,781,000
Consideration
Debt assumed			829,000,000
Asset Acquisition, Payments to Acquire Businesses, Gross	1,141,797,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Goodwill And Other Intangible Assets			69,984,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			1,643,879,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill And Other Intangibles			418,033,000
Safe Harbor Hideaway Bay
At acquistion date
In-place leases, goodwill and other intangible assets			23,000
Other assets / (liabilities), net			1,077,000
Total identifiable assets acquired and liabilities assumed			32,406,000
Consideration
Debt assumed			0
Asset Acquisition, Payments to Acquire Businesses, Gross	32,406,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Goodwill And Other Intangible Assets			0
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			26,218,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill And Other Intangibles			7,242,000
Safe Harbor Anacapa Isle
At acquistion date
In-place leases, goodwill and other intangible assets			0
Other assets / (liabilities), net			(60,000)
Total identifiable assets acquired and liabilities assumed			14,130,000
Consideration
Debt assumed			0
Asset Acquisition, Payments to Acquire Businesses, Gross	14,130,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Goodwill And Other Intangible Assets			0
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			10,924,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill And Other Intangibles			3,146,000
Safe Harbor Rybovich Portfolio
At acquistion date
In-place leases, goodwill and other intangible assets			620,000
Other assets / (liabilities), net			37,000
Total identifiable assets acquired and liabilities assumed			372,487,000
Consideration
Debt assumed			0
Asset Acquisition, Payments to Acquire Businesses, Gross	$ 258,123,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Liabilities, Goodwill And Other Intangible Assets			114,364,000
Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			122,064,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill And Other Intangibles			$ 249,840,000
Number of marinas owned (in marinas) | marina		2
Islamorada and Angler House
At acquistion date
Total identifiable assets acquired and liabilities assumed		$ 17,975,000
Consideration
Temporary and permanent equity		0
Total consideration		17,975,000
Prime Martha's Vineyard
At acquistion date
Total identifiable assets acquired and liabilities assumed		21,950,000
Consideration
Temporary and permanent equity		0
Total consideration		21,950,000
Themeworld RV
At acquistion date
Investment in property		25,000,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		0
Other assets / (liabilities), net		(104,000)
Total identifiable assets acquired and liabilities assumed		24,896,000
Consideration
Cash and escrow		24,896,000
Temporary and permanent equity		0
Total consideration		24,896,000
Sylvan Glen Estates
At acquistion date
Investment in property		23,469,000
Inventory of manufactured homes, boat parts and retail related items		20,000
In-place leases, goodwill and other intangible assets		531,000
Other assets / (liabilities), net		(269,000)
Total identifiable assets acquired and liabilities assumed		23,751,000
Consideration
Cash and escrow		(249,000)
Temporary and permanent equity		24,000,000
Total consideration		23,751,000
Shelter Island
At acquistion date
Investment in property		9,520,000
Inventory of manufactured homes, boat parts and retail related items		132,000
In-place leases, goodwill and other intangible assets		402,000
Other assets / (liabilities), net		(85,000)
Total identifiable assets acquired and liabilities assumed		9,969,000
Consideration
Cash and escrow		9,969,000
Temporary and permanent equity		0
Total consideration		9,969,000
Apponaug Harbor
At acquistion date
Investment in property		6,540,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		89,000
Other assets / (liabilities), net		(689,000)
Total identifiable assets acquired and liabilities assumed		5,940,000
Consideration
Cash and escrow		5,940,000
Temporary and permanent equity		0
Total consideration		5,940,000
Lauderdale Marine Center
At acquistion date
Investment in property		336,992,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		3,282,000
Other assets / (liabilities), net		958,000
Total identifiable assets acquired and liabilities assumed		341,232,000
Consideration
Cash and escrow		341,232,000
Temporary and permanent equity		0
Total consideration		341,232,000
Marathon Marina
At acquistion date
Investment in property		19,129,000
Inventory of manufactured homes, boat parts and retail related items		19,000
In-place leases, goodwill and other intangible assets		261,000
Other assets / (liabilities), net		(227,000)
Total identifiable assets acquired and liabilities assumed		19,182,000
Consideration
Cash and escrow		19,182,000
Temporary and permanent equity		0
Total consideration		19,182,000
Sun Outdoors
At acquistion date
Investment in property		14,965,000
Inventory of manufactured homes, boat parts and retail related items		0
In-place leases, goodwill and other intangible assets		41,000
Other assets / (liabilities), net		(248,000)
Total identifiable assets acquired and liabilities assumed		14,758,000
Consideration
Cash and escrow		14,758,000
Temporary and permanent equity		0
Total consideration		$ 14,758,000