Investment in Office Properties and Parking Properties - Allocation of Purchase Price (Details) (One Buckhead Plaza, USD $) In Thousands, unless otherwise specified	Jan. 08, 2015
One Buckhead Plaza
Acquired Finite-Lived Intangible Assets [Line Items]
Land	$ 20,600
Buildings	124,634
Tenant improvements	5,562
Lease commissions	5,326
Lease in place value	7,143
Above market leases	1,764
Below market leases	$ (8,029)

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Below Market Leases

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles, Above Market Leases

+ References

No definition available.

+ Details

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles, In-Place Leases

+ References

No definition available.

+ Details

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Lease Commissions

+ References

No definition available.

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tenant Improvements

+ References

No definition available.

+ Details

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- Definition

Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472

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- Definition

Amount of real estate acquired, at the acquisition date.

+ References

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