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Note 4 - Ground-Up Development (Detail) | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Number of Real Estate Properties | 26 | 690
Gound-up Development [Member] | United States [Member] |  |
Number of Real Estate Properties | 2 |
Gound-up Development [Member] | Peru [Member] |  |
Number of Real Estate Properties | 1 |
Gound-up Development [Member] |  |
Number of Real Estate Properties | 3 |

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