Investment in Real Estate - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended		9 Months Ended				9 Months Ended	12 Months Ended	3 Months Ended	9 Months Ended	1 Months Ended											1 Months Ended	12 Months Ended
	Jul. 17, 2014	Aug. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Mar. 10, 2014	Dec. 31, 2013	Sep. 30, 2014 Purchase Price Allocation Adjustments	Dec. 31, 2013 Cascade [Member]	Sep. 30, 2013 Segment, Discontinued Operations [Member]	Sep. 30, 2013 Segment, Discontinued Operations [Member]	Jan. 31, 2014 R V Resort [Member] integer	Sep. 16, 2013 R V Resort [Member]	Jan. 07, 2014 R V Resort [Member] Blackhawk Camping Resort [Member] site	Jan. 24, 2014 R V Resort [Member] Lakeland Camping Resort [Member] site	Dec. 17, 2013 R V Resort [Member] Neshonoc Lakeside [Member]	Mar. 31, 2014 R V Resort [Member] Diversified Portfolio [Member]	Sep. 26, 2014 R V Resort [Member] Pine Acres Resort [Member] site	Sep. 29, 2014 R V Resort [Member] Echo Farm Campground [Member] site	Sep. 30, 2014 R V Resort [Member] Mays Landing Resort [Member] site	Sep. 30, 2014 R V Resort [Member] Auction Properties [Domain]	Oct. 01, 2014 R V Resort [Member] Subsequent Event [Member] Space Coast RV Resort [Member] site	Aug. 30, 2013 Manufactured Home [Member] integer	Dec. 31, 2013 Manufactured Home [Member] Property site	Aug. 01, 2013 Manufactured Home [Member] integer	May 08, 2013 Manufactured Home [Member]	Mar. 10, 2014 Manufactured Home [Member] Colony Cove [Member]	Sep. 30, 2014 Leases, Acquired-in-Place [Member]	Dec. 31, 2013 Leases, Acquired-in-Place [Member]	Sep. 30, 2014 Manufactured Home [Member]	Dec. 31, 2013 Manufactured Home [Member]	Sep. 30, 2014 Depreciable Assets [Member]	Dec. 31, 2013 Depreciable Assets [Member]	Sep. 30, 2014 Land [Member]	Dec. 31, 2013 Land [Member]	Sep. 30, 2014 New Credit Facilities [Member] R V Resort [Member]	Mar. 31, 2014 New Credit Facilities [Member] R V Resort [Member] Diversified Portfolio [Member]
Real Estate Properties [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			$ 74,796,000		$ 74,796,000			$ 133,393,000																					$ 773,000	$ 3,910,000	$ 769,000	$ 1,155,000	$ 29,493,000	$ 87,306,000	$ 43,761,000	$ 41,022,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other			1,197,000		1,197,000			1,025,000
Asset acquisition price adjustments period									1 year
Number of RV Resorts Acquired													2
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			0	40,586,000	0	41,544,000				1,000,000
Escrow Share Distribution							51,290
Number Of Properties Disposed																									11
Number of Sites Disposed																									5,344
Purchase Price For Disposed Properties																											165,000,000
Community Base Rental Income			106,967,000	103,157,000	319,514,000	305,401,000					1,448,000	11,565,000
Rental Home Income			3,684,000	3,584,000	11,187,000	10,576,000					328,000	1,948,000
Utility And Other Income			18,581,000	16,224,000	53,070,000	48,694,000					378,000	1,375,000
Disposal Group, Including Discontinued Operation, Revenue				2,154,000		14,888,000
Disposal Group, Including Discontinued Operation, Operating Expense				1,116,000		6,039,000
Disposal Group, Including Discontinued Operation, Operating Income (Loss)				1,038,000		8,849,000
Gains (Losses) on Sales of Other Real Estate											2,000	(77,000)
Disposal Group Including Discontinued Operation Other Income and Expenses				37,000		334,000
Disposal Group, Including Discontinued Operation, Interest Expense				(95,000)		(355,000)
Disposal Group, Including Discontinued Operation, Depreciation and Amortization				0		(1,536,000)
Number Of Acquired Sites														324	490	682	284		421	237	168		270			1,207
Business Acquisition, Purchase Price														24,600,000				31,800,000				11,800,000	6,100,000			102,000,000		35,900,000
Number of manufactured home communities acquired																								3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt																																					13,300,000	18,700,000
Debt Instrument, Unamortized Discount (Premium), Net																																					1,000,000	1,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			75,993,000		75,993,000			134,418,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities			14,230,000		14,230,000			5,382,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			4,193,000		4,193,000			1,777,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			18,423,000		18,423,000			7,159,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			57,570,000		57,570,000			127,259,000
Units Issued During Period, Value, Acquisition		9,700,000
Units Issued During Period, Shares, Acquisition		240,969
Gain (Loss) on Condemnation	900,000		929,000	0	929,000	0
Proceeds from Condemnation	2,100,000
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest			$ 0	$ 41,568,000	$ 0	$ 48,759,000					$ 982,000	$ 7,215,000