The Company and Financial Statement Presentation - Additional Information (Details)	3 Months Ended
Mar. 31, 2020 Property state
Variable Interest Entity [Line Items]
Number of properties \| Property	135
Number of states in which entity has interests \| state	30
NNN Office Joint Venture
Variable Interest Entity [Line Items]
VIE, ownership percentage	90.00%
LCIF \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
VIE, ownership percentage	97.00%

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

No definition available.

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Balance Type:	na
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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

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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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685

+ Details

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- Details

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- Details

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- Details

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