Investments in Unconsolidated Joint Ventures - Summary of Financial Information of Unconsolidated Joint Ventures (Parenthetical) (Details) - 111 Sutter Street [Member]	12 Months Ended
Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss	$ 31,685,000
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss	$ 31,685,000

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