Organization and Formation of Company - Additional Information (Detail)	Sep. 30, 2014 State sqft Property Joint_Ventures
Organization and Formation of Company [Line Items]
Ownership interest of sole general partner	96.20%
Ownership interest in general partner	100.00%
Ownership interest of limited partners	3.80%
Number of joint ventures	2
Number of industrial properties owned	638
Number of states in which industrial properties are located	25
Gross leasable area (GLA) of industrial properties owned	63,300,000
2003 Net Lease Joint Venture
Organization and Formation of Company [Line Items]
Number of industrial properties owned	1
Gross leasable area (GLA) of industrial properties owned	800,000

The number of joint ventures that the entity owns a non-controlling interest in as of the balance sheet date.

No definition available.

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Ownership interest in general partner.

No definition available.

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Area of a real estate property.

No definition available.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

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

No definition available.

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The number of states the entity operates in as of the balance sheet date.

No definition available.

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