Segment Information Narrative (Details) - Los Angeles [Member] ft² in Millions	Mar. 31, 2019 ft² Buildings
Segment Reporting Information [Line Items]
Net Rentable Area (in sf) \| ft²	2.3
Number of real estate properties \| Buildings	27

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.

No definition available.

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