Investments in Unconsolidated Joint Ventures - Purchase Price Allocation (Details) - Safeco Plaza - Safeco Plaza REIT LLC $ in Thousands	Sep. 01, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Land	$ 81,343
Building and improvements	351,948
Tenant improvements	30,404
Net assets acquired	460,112
In-Place Lease Intangibles
Schedule of Equity Method Investments [Line Items]
Lease Intangibles	28,658
Above Market Lease Intangibles [Member]
Schedule of Equity Method Investments [Line Items]
Lease Intangibles	301
Below Market Lease Intangible [Member]
Schedule of Equity Method Investments [Line Items]
Lease Intangibles	$ (32,542)

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