The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Real Estate Investments - Narrative (Details)	3 Months Ended	12 Months Ended
Real Estate Investments - Narrative (Details)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) $ / ft²	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Finite-Lived Intangible Assets [Line Items]
Impairment charges		$ 1,500,000	$ 0	$ 0
Minimum \| Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Measurement input		0.07
Minimum \| Terminal Capitalization Rate
Finite-Lived Intangible Assets [Line Items]
Measurement input		0.07
Minimum \| Estimate Market Rents
Finite-Lived Intangible Assets [Line Items]
Measurement input \| $ / ft²		40.00
Maximum \| Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Measurement input		0.08
Maximum \| Terminal Capitalization Rate
Finite-Lived Intangible Assets [Line Items]
Measurement input		0.09
Maximum \| Estimate Market Rents
Finite-Lived Intangible Assets [Line Items]
Measurement input \| $ / ft²		50.00
Depreciation and Amortization
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles		$ 7,621,000	9,315,000	10,509,000
Depreciation and Amortization \| Termination Of Lease
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles		300,000
Depreciation and Amortization \| In-place leases
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles		6,684,000	8,150,000	$ 9,344,000
Depreciation and Amortization \| In-place leases \| Termination Of Lease
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 1,300,000	$ 1,100,000	$ 1,300,000