Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Parenthetical) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Distributions of earnings from unconsolidated joint ventures		$ 1,324,000	$ 7,278,000	$ 3,999,000
Contribution to the joint venture		15,812,000	11,750,000	$ 60,000
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions made in excess of share of earnings recognized negative basis		13,427,000	$ 14,329,000
Income (Loss) of investment accounted under equity method accounting		1,804,000
Proportionate share of income (loss) of equity method investment not recognized		$ 902,000
Equity method paramount ownership percentage	50.00%	50.00%
55 Second Street [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 466,000	$ 466,000
Equity method paramount ownership percentage	44.10%	44.10%
111 Sutter Street [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions made in excess of share of earnings recognized negative basis		$ 107,000
Real estate impairment loss	$ (64,663,000)
Proportionate share of real estate impairment loss		$ 31,685,000
Equity method paramount ownership percentage	49.00%	49.00%
1600 Broadway [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 323,000	$ 323,000
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 2,574,000	$ 2,574,000
Equity method paramount ownership percentage	5.00%	5.00%
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 645,000	$ 645,000
Equity method paramount ownership percentage	35.00%	35.00%
Equity method economic interest percentage		2.60%
One Steuart Lane [Member] | Residential Development Fund's [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	7.40%	7.40%
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 3,847,000	$ 3,847,000
Equity method paramount ownership percentage	9.50%	9.50%