Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2024	Mar. 29, 2024
Schedule Of Equity Method Investments [Line Items]
Proportionate share of impairment loss on for sale condominium units	$ 23,942
55 Second Street [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity			$ 457
Equity method paramount ownership percentage			44.10%
1600 Broadway [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity			$ 300
Equity method paramount ownership percentage			9.20%
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity			$ 564
Equity method paramount ownership percentage			35.00%
Equity method economic interest percentage			2.60%
Impairment loss on for sale condominium units	$ 68,407
One Steuart Lane [Member] | Residential Development Fund's [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage			7.40%
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity			$ 4,033
Equity method paramount ownership percentage			9.50%
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Real estate impairment loss		$ 455,893
Proportionate share of real estate impairment loss		$ 24,734
Equity method paramount ownership percentage			5.00%	5.00%