Organization and Ownership (Details) $ in Thousands, ft² in Millions	12 Months Ended	94 Months Ended
Dec. 31, 2015 USD ($) ft² jointventure office_properties office_buildings	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) ft² jointventure office_properties office_buildings
Real Estate Properties [Line Items]
cumulative net losses			$ 229,000
Total stockholders’ equity (deficit)	$ 153,134	$ 149,140	$ 153,134
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	$ 14,264	$ 17,352
Wholly Owned Properties
Real Estate Properties [Line Items]
Number of office properties \| office_properties	3		3
Rentable square feet (in square feet) \| ft²	1.2		1.2
Unconsolidated Properties
Real Estate Properties [Line Items]
Rentable square feet (in square feet) \| ft²	0.8		0.8
Number of joint ventures \| jointventure	3		3
Unconsolidated joint venture ownership interest percentage	5.00%		5.00%
Unconsolidated Properties, Excluding City Square Sports Club in Phoenix, Arizona [Member]
Real Estate Properties [Line Items]
Number of office properties \| office_properties	2		2
Number of office buildings \| office_buildings	4		4

cumulative net losses

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- Definition

The number of joint venture as of the balance sheet date.

+ References

No definition available.

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- Definition

Number of Real Estate Buildings

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

Amount after income tax of income (loss) including the portion attributable to nonredeemable noncontrolling interest. Excludes the portion attributable to redeemable noncontrolling interest recognized as temporary equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph (3)
-URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684

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- Definition

Net rentable area for properties owned.

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

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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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No definition available.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

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