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Investment in Unconsolidated Joint Ventures (Details)		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 05, 2018 USD ($) item	Jul. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) property	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) property item	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) property item
Investment in Unconsolidated Joint Ventures
Equity in earnings from sale of unconsolidated joint venture property			$ 71,000		$ 71,000
Number of unconsolidated joint ventures | item					5		5
Number of properties owned and operated by each unconsolidated joint venture | property			1		1		1
Investment in unconsolidated joint ventures			$ 11,214,000		$ 11,214,000		$ 10,723,000
Equity in earnings of unconsolidated joint ventures			348,000	$ 206,000	543,000	$ 451,000
Income related to the discontinuance of hedge accounting on a mortgage swap					110,000
Georgia
Investment in Unconsolidated Joint Ventures
Net Proceeds from the sale of a building and a portion of the land	$ 2,600,000
Share of gain (as a percent)	50.00%
Equity in earnings from sale of unconsolidated joint venture property	$ 71,000
Acres of land retained | item	5
Wisconsin
Investment in Unconsolidated Joint Ventures
Share of gain (as a percent)		50.00%
Net Proceeds from the sale of property in unconsolidated joint venture		$ 12,800,000
Payment of mortgage		6,970,000
Gain on sale of real estate		$ 2,000,000
MCB Real Estate LLC And Its Affiliates
Investment in Unconsolidated Joint Ventures
Investment in unconsolidated joint ventures			$ 8,408,000		$ 8,408,000

X

- Definition

Amount of difference between the carrying amount and the sales price of real estate properties sold.

+ References

No definition available.

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- Definition

Amount of difference between the carrying amount and sales price of real estate properties sold relating to unconsolidated joint venture.

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- Definition

The cash inflow from the net proceeds from the sale of buildings and land.

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No definition available.

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- Definition

The cash inflow from the net proceeds from the sale of property in unconsolidated joint venture.

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- Definition

The number of acres of land retained by unconsolidated joint venture.

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- Definition

Represents the number of properties owned and operated by each unconsolidated joint venture.

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- Definition

Represents the number of unconsolidated joint ventures of the entity that are accounted for under the equity method of accounting.

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- Definition

The percentage of share of gain on sale of property in unconsolidated joint venture.

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- Definition

The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(f))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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Amount of cash inflow (outflow) from long-term debt secured by a first mortgage deed of trust, containing a pledge of real property.

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- Definition

The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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