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Related Party Transactions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Related Party Transaction
Share based compensation charged to operations	$ 684,000	$ 770,000	$ 2,341,000	$ 2,176,000
Majestic
Related Party Transaction
Fees under compensation and services agreement	667,000	629,000	1,996,000	1,855,000
Property management costs allocated to real estate expenses	287,000	267,000	857,000	770,000
Additional payment for the entity's share of all direct office expenses	54,000	49,000	162,000	147,000
Executive officers and others
Related Party Transaction
Share based compensation charged to operations	361,000	399,000	1,128,000	1,125,000
Joint venture partners
Related Party Transaction
Real estate property management costs	30,000	35,000	112,000	123,000
Corporate joint venture
Related Party Transaction
Aggregate fees paid to other partners	45,000	55,000	132,000	127,000
Decrease in equity earnings, joint venture transaction	22,000	27,000	66,000	63,000
Chairman
Related Party Transaction
Fee paid			69,000	65,625
Vice Chairman
Related Party Transaction
Fee paid			27,500	26,250
Gould Investors L.P.
Related Party Transaction
Insurance Reimbursement	782,000	699,000	782,000	699,000
Real estate insurance expense	$ 204,000	$ 169,000	551,000	$ 371,000
Gould Investors L.P. | Other assets
Related Party Transaction
Prepaid Insurance Reimbursement			$ 470,000
Net lease tenants | Majestic
Related Party Transaction
Property management fee (as a percent)			1.50%
Operating lease tenants | Majestic
Related Party Transaction
Property management fee (as a percent)			2.00%

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- Definition

Aggregate fees paid to other partners of the venture.

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- Definition

Represents prepaid insurance related to the amounts reimbursed to related party.

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No definition available.

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No definition available.

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- Definition

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No definition available.

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- Definition

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- Definition

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No definition available.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The percentage charged for managing real estate properties.

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A contract to provide coverage or protection in exchange for a payment or "premium". Examples of insurance protection include liability and property insurance. The entity paying the premiums for the protection will have insurance expense and possibly an asset, Prepaid Insurance (if the premiums are paid in advance).

+ References

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

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