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- Definition

Summary Of Significant Accounting Policies [Line Items]

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- Definition

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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- Definition

Area of a real estate property.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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- Definition

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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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of cash restricted as to withdrawal or usage, classified as current. 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.

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Summary Of Significant Accounting Policies (Narrative) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) a segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Restricted cash, Current		$ 7,000	$ 1,300,000
Number of segments \| segment		2
Derivative position		$ 342,000	186,000
Goodwill impairment		0	0	$ 0
Advertising expense		1,800,000	2,400,000	2,300,000
Gains/(losses) on the settlement of litigation		(67,000)		1,800,000
Non Income Producing Properties [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment losses		$ 0	$ 0	$ 0
Mt. Gravatt [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage		33.30%
Rialto Cinemas [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage		50.00%
Australian Country Cinemas Pty Ltd. [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage by parent		75.00%
Sutton Hill Properties, LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage by parent		75.00%
Shadow View Land And Farming, LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage by parent		50.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage		20.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage		50.00%
Shadow View Land And Farming, LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Area of property \| a		202
Tax Year 2019 [Member]
Summary Of Significant Accounting Policies [Line Items]
Prior period immaterial error amount	$ 993,000