XML 18 R25.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Organization (Details) | 3 Months Ended
--- | ---
Mar. 31, 2015 segment sqft property
Property Subject to or Available for Operating Lease [Line Items] |
Number of markets | 6 us-gaap_NumberOfOperatingSegments
Number of buildings | 137 us-gaap_NumberOfRealEstateProperties
Area of real estate property | 10,400,000 us-gaap_AreaOfRealEstateProperty
Buildings Held-for-sale [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Number of buildings | 3 us-gaap_NumberOfRealEstateProperties / us-gaap_MajorPropertyClassAxis = us-gaap_AssetsHeldForSaleMember

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MajorPropertyClassAxis=us-gaap_AssetsHeldForSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |