Investment in Real Estate - Summary of Industrial Properties Included in Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Real Estate Investment Property, Net [Abstract]
Total Revenues	$ 53	$ 3,653
Property Expenses	(40)	(1,516)
Depreciation and Amortization	(15)	(1,321)
Gain (Loss) on Sale of Real Estate	735	(3,074)
Income (Loss) from Discontinued Operations	$ 733	$ (2,258)

Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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Amount of depreciation and amortization attributable to disposal group.

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Amount of operating expenses attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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