XML 70 R51.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Business - Additional Information (Details) | 12 Months Ended |  |
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Dec. 31, 2018 State Property ApartmentUnit | Apr. 02, 2018 ApartmentUnit | Feb. 01, 2018 ApartmentUnit
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Number of states in which entity operates | State | 11 |  |
Properties | Property | 307 |  |
Apartment units | 79,482 |  |
Number of operating properties under long-term ground leases | Property | 14 |  |
Minimum [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Long term ground lease expiration period | 2042 |  |
Maximum [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Long term ground lease expiration period | 2113 |  |
Master-Leased Properties – Consolidated | Boston |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Number of self managed apartments |  |  | 94
Master-Leased Properties – Consolidated | Los Angeles |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Number of self managed apartments |  | 597 |
ERPOP [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Noncontrolling interest, ownership percentage by parent | 96.40% |  |

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- Definition Number of operating properties for which the Company owns the building and improvements and leases the underlying land under long-term ground leases. + References No definition available. + Details
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- Definition Number of self managed apartments. + References No definition available. + Details
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Balance Type: | na
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- Definition Operating lease expiration year. + References No definition available. + Details
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- Definition Organization consolidation and presentation of financial statements disclosure. + References No definition available. + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
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- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
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- Details
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- Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |