Segment Information - Summary of NOI by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information
Property rental revenue	$ 122,241	$ 120,380
Total rental revenue	124,996	126,761
Property operating	34,731	34,503
Real estate taxes	18,310	18,199
Total property expense	53,041	52,702
Consolidated NOI	71,955	74,059
Parking
Segment Reporting Information
Revenue	2,755	6,381
Operating Segments \| Commercial Segment
Segment Reporting Information
Property rental revenue	90,603	91,198
Total rental revenue	93,293	97,442
Property operating	23,975	27,943
Real estate taxes	11,772	12,372
Total property expense	35,747	40,315
Consolidated NOI	57,546	57,127
Operating Segments \| Commercial Segment \| Parking
Segment Reporting Information
Revenue	2,690	6,244
Operating Segments \| Multifamily
Segment Reporting Information
Property rental revenue	32,586	32,803
Total rental revenue	32,651	32,940
Property operating	12,195	10,307
Real estate taxes	5,245	4,738
Total property expense	17,440	15,045
Consolidated NOI	15,211	17,895
Operating Segments \| Multifamily \| Parking
Segment Reporting Information
Revenue	65	137
Other
Segment Reporting Information
Property rental revenue	(948)	(3,621)
Total rental revenue	(948)	(3,621)
Property operating	(1,439)	(3,747)
Real estate taxes	1,293	1,089
Total property expense	(146)	(2,658)
Consolidated NOI	$ (802)	$ (963)

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Rental Revenue

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Amount of expense incurred and directly related to generating revenue by lessor from operating lease of rented property and equipment.

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Amount of operating lease expense. Excludes sublease income.

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Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land).

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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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.

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