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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

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Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of investment in marketable security.

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The number of real estate properties owned as of the balance sheet date.

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The number of states the entity operates in as of the balance sheet date.

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The number of units in a real estate property owned as of the balance sheet date.

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Significant Accounting Policies Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) expansion_site	Dec. 31, 2018 USD ($) site	Dec. 31, 2017 USD ($)	Dec. 31, 2019 properties	Dec. 31, 2019 site	Dec. 31, 2019 sites	Dec. 31, 2019 USD ($)	Dec. 31, 2019	Sep. 30, 2019 USD ($)
Significant Accounting Policies [Line Items]
Debt Issuance Costs, Line of Credit Arrangements, Net		$ 4,700					$ 4,500
Cash, cash equivalents and restricted cash		$ 50,300					22,100
Cost Method Investment, Policy, Maximum Percentage Of Ownership	5.00%
Number of Real Estate Properties \| properties				422
Number of States in which Entity Operates \| properties				33
Number of Units in Real Estate Property		4,882			10,390	141,293
Cash, Uninsured Amount		$ 49,500					22,900
Marketable securities		49,037					94,727		$ 94,727
Restricted Cash and Cash Equivalents		12,000					$ 12,700
Advertising Expense	$ 6,700	6,200	$ 5,900
Number of sites suitable for development \| expansion_site	900
Unrealized foreign currency translation (gain) / loss	$ (4,500)	(8,400)	$ (5,900)
Deferred Financing Costs and Discount and Premium Costs	$ 7,900	$ 2,400
Land improvements and buildings [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P30Y
Rental properties [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P10Y
Maximum [Member]
Significant Accounting Policies [Line Items]
Resident Balance Past Due Period	90 days
Finite-Lived Intangible Asset, Useful Life	20 years
Minimum [Member]
Significant Accounting Policies [Line Items]
Resident Balance Past Due Period	60 days
Finite-Lived Intangible Asset, Useful Life	7 years
Minimum [Member] \| Furniture and Fixtures [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P7Y
Minimum [Member] \| Computer Equipment [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P4Y
Manufactured home community [Member]
Significant Accounting Policies [Line Items]
Number of Real Estate Properties \| properties				266
Number of Units in Real Estate Property \| sites						93,821
RV community [Member]
Significant Accounting Policies [Line Items]
Number of Real Estate Properties \| properties				122
Transient RV site [Member]
Significant Accounting Policies [Line Items]
Number of Units in Real Estate Property \| site					21,416
Manufactured Home And Rv Community [Member]
Significant Accounting Policies [Line Items]
Number of Real Estate Properties \| properties				34
Number of sites suitable for development \| sites						10,300
Annual Rv Sites [Member]
Significant Accounting Policies [Line Items]
Number of Units in Real Estate Property \| site					26,056
Ingenia [Member]
Significant Accounting Policies [Line Items]
Equity Method Investment, Ownership Percentage								10.00%