Real Estate Acquisitions and Dispositions Real Estate Acquisitions, 2015 Other Acquisitions Purchase Price Allocation (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Meadowlands [Member]
Business Acquisition [Line Items]
Investment in property	$ 8,313
Inventory of manufactured homes	285
In-place leases and other intangible assets	270
Below market leases	0
Assumed debt	(6,318)
Total identifiable assets and liabilities assumed	2,550
Cash consideration transferred	173
Business Combination, Contingent Consideration, Liability	2,377
Cash, proceeds from dispositions held in escrow, or contingent liability	2,550
Meadowlands [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Meadowlands [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Berger [Member]
Business Acquisition [Line Items]
Investment in property	268,026
Inventory of manufactured homes	0
In-place leases and other intangible assets	5,040
Below market leases	(7,840)
Assumed debt	(169,882)
Total identifiable assets and liabilities assumed	95,344
Cash consideration transferred	42,540
Business Combination, Contingent Consideration, Liability	0
Cash, proceeds from dispositions held in escrow, or contingent liability	95,344
Berger [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	19,650
Berger [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	33,154
Lakeside Crossing [Member]
Business Acquisition [Line Items]
Investment in property	35,438
Inventory of manufactured homes	0
In-place leases and other intangible assets	520
Below market leases	(3,440)
Assumed debt	0
Total identifiable assets and liabilities assumed	32,518
Cash consideration transferred	32,518
Business Combination, Contingent Consideration, Liability	0
Cash, proceeds from dispositions held in escrow, or contingent liability	32,518
Lakeside Crossing [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Lakeside Crossing [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
La Hacienda [Member]
Business Acquisition [Line Items]
Investment in property	25,895
Inventory of manufactured homes	0
In-place leases and other intangible assets	1,380
Below market leases	0
Assumed debt	0
Total identifiable assets and liabilities assumed	27,275
Cash consideration transferred	27,275
Business Combination, Contingent Consideration, Liability	0
Cash, proceeds from dispositions held in escrow, or contingent liability	27,275
La Hacienda [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
La Hacienda [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Frontier Town [Member]
Business Acquisition [Line Items]
Investment in property	62,126
Inventory of manufactured homes	0
In-place leases and other intangible assets	70
Below market leases	0
Assumed debt	0
Total identifiable assets and liabilities assumed	62,196
Cash consideration transferred	62,196
Business Combination, Contingent Consideration, Liability	0
Cash, proceeds from dispositions held in escrow, or contingent liability	62,196
Frontier Town [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Frontier Town [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Fort Whaley [Member]
Business Acquisition [Line Items]
Investment in property	5,704
Inventory of manufactured homes	0
In-place leases and other intangible assets	0
Below market leases	0
Assumed debt	0
Total identifiable assets and liabilities assumed	5,704
Cash consideration transferred	5,704
Business Combination, Contingent Consideration, Liability	0
Cash, proceeds from dispositions held in escrow, or contingent liability	5,704
Fort Whaley [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Fort Whaley [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Rock Crusher [Member]
Business Acquisition [Line Items]
Investment in property	5,962
Inventory of manufactured homes	0
In-place leases and other intangible assets	110
Below market leases	0
Assumed debt	0
Total identifiable assets and liabilities assumed	6,072
Cash consideration transferred	6,072
Business Combination, Contingent Consideration, Liability	0
Cash, proceeds from dispositions held in escrow, or contingent liability	6,072
Rock Crusher [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Rock Crusher [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	0
Acquisitions - 2015 [Member]
Business Acquisition [Line Items]
Investment in property	411,464
Inventory of manufactured homes	285
In-place leases and other intangible assets	7,390
Below market leases	(11,280)
Assumed debt	(176,200)
Total identifiable assets and liabilities assumed	231,659
Cash consideration transferred	176,478
Business Combination, Contingent Consideration, Liability	2,377
Cash, proceeds from dispositions held in escrow, or contingent liability	231,659
Acquisitions - 2015 [Member] | Common OP Units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	19,650
Acquisitions - 2015 [Member] | Series C preferred OP units [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 33,154