Amount of real estate taxes and insurance attributable to disposal group, but not limited to, discontinued operation.

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Represents the number of office properties sold.

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No definition available.

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Amount after tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until disposal.

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Amount of depreciation and amortization expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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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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No definition available.

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The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.

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Dispositions of Property (Details) $ in Thousands			3 Months Ended		6 Months Ended
Dispositions of Property (Details) $ in Thousands	Jun. 29, 2021 USD ($)	May 27, 2021 USD ($) property	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Dispositions of properties
Gain (loss) on sale of property			$ 20,626		$ 20,626
Office Properties in Atlanta, Georgia
Dispositions of properties
Number of properties sold \| property		3
Gain (loss) on sale of property		$ 22,700
Sale price		$ 219,500
Office Property in Dulles, Virginia
Dispositions of properties
Gain (loss) on sale of property	$ (2,100)
Disposal group disposed of by sale, not classified as discontinued operations
Operating results for discontinued operations:
Rental revenue			4,139	$ 6,670	10,722	$ 13,528
Rental operating expenses			(1,525)	(2,237)	(3,832)	(4,653)
Real estate taxes and insurance			(621)	(1,021)	(1,644)	(2,029)
Depreciation and amortization			(537)	(2,655)	(3,107)	(5,368)
Net income (loss) from discontinued operations			$ 1,456	$ 757	$ 2,139	$ 1,478