Real Estate Fund Investments - Summary of Consolidated Real Estate Funds (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Investment Holdings [Line Items]
Income (loss) from real estate fund investments	$ 37,975
Less: amounts attributable to noncontrolling interests	(24,896)
Income from real estate fund investments attributable to Paramount Group, Inc.	13,079
Net investment income (loss) [Member]
Investment Holdings [Line Items]
Income (loss) from real estate fund investments	12,274
Net realized gains [Member]
Investment Holdings [Line Items]
Income (loss) from real estate fund investments	13,884
Previously Recorded Unrealized Gains Losses on Exited Investments [Member]
Investment Holdings [Line Items]
Income (loss) from real estate fund investments	(6,584)
Net unrealized loss [Member]
Investment Holdings [Line Items]
Income (loss) from real estate fund investments	$ 18,401