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Real Estate Assets (Properties) (Detail)	Dec. 31, 2016 ft² Property
Industrial Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Number of properties	2
Medical Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Number of properties	2
Office Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Number of properties	15
Office/Industrial Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Rentable square feet | ft²	1,500,000
Retail Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Number of properties	6
Rentable square feet | ft²	234,000
Residential Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Number of properties	108
Number of Limited Liability Companies	1

X

- Definition

Number of limited liability companies.

+ References

No definition available.

+ Details

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X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Data Type:	num:areaItemType
Balance Type:	na
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X

- Definition

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

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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X

- Details

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X

- Details

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