Paramount (PGRE) 10-K 13 Feb 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Jan. 31, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Trading Symbol	PGRE
Entity Registrant Name	PARAMOUNT GROUP, INC.
Entity Central Index Key	1,605,607
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Well Known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Common Stock, Shares Outstanding		233,214,341
Entity Public Float			$ 3,182,749,000

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Real estate, at cost
Land		$ 2,065,206	$ 2,209,506
Buildings and improvements		6,036,445	6,119,969
Rental property, at cost		8,101,651	8,329,475
Accumulated depreciation and amortization		(644,639)	(487,945)
Real estate, net		7,457,012	7,841,530
Cash and cash equivalents		339,653	219,381
Restricted cash		25,756	31,044
Investments in unconsolidated joint ventures		78,863	44,762
Investments in unconsolidated real estate funds		10,352	7,253
Preferred equity investments, net of allowance of $0 and $19,588		36,042	35,817
Marketable securities		22,660	29,039
Accounts and other receivables, net of allowance of $593 and $277		20,076	17,082
Deferred rent receivable		267,456	220,826
Deferred charges, net of accumulated amortization of $30,129 and $19,412		117,858	98,645
Intangible assets, net of accumulated amortization of $245,444 and $200,857		270,445	352,206
Other assets		109,805	20,076
Total assets	[1]	8,755,978	8,917,661
LIABILITIES AND EQUITY
Notes and mortgages payable, net of deferred financing costs of $32,883 and $41,800		3,566,917	3,541,300
Revolving credit facility		0	0
Due to affiliates			27,299
Accounts payable and accrued expenses		124,334	117,630
Dividends and distributions payable		25,902	25,211
Intangible liabilities, net of accumulated amortization of $89,200 and $75,073		95,991	130,028
Other liabilities		51,170	54,109
Total liabilities	[1]	3,864,314	3,895,577
Commitments and contingencies
Paramount Group, Inc. equity:
Common stock $0.01 par value per share; authorized 900,000,000 shares; issued and outstanding 233,135,704 and 240,427,022 shares in 2018 and 2017, respectively		2,329	2,403
Additional paid-in-capital		4,201,756	4,297,948
Earnings less than distributions		(219,906)	(133,693)
Accumulated other comprehensive income		16,621	10,083
Paramount Group, Inc. equity		4,000,800	4,176,741
Noncontrolling interests in:
Consolidated joint ventures		394,995	404,997
Consolidated real estate fund		66,887	14,549
Operating Partnership (25,127,003 and 24,620,279 units outstanding)		428,982	425,797
Total equity		4,891,664	5,022,084
Total liabilities and equity		$ 8,755,978	$ 8,917,661
[1]	Represents the consolidated assets and liabilities of Paramount Group Operating Partnership LP, a Delaware limited partnership (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which we are the sole general partner and own approximately 90.3% as of December 31, 2018. The assets and liabilities of the Operating Partnership, as of December 31, 2018, include $1,982,679 and $1,253,414 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 14, Variable Interest Entities (“VIEs”).

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Preferred equity investments, allowance		$ 0	$ 19,588
Accounts and other receivables, allowance		593	277
Deferred charges, accumulated amortization		30,129	19,412
Intangible assets, accumulated amortization		245,444	200,857
Notes and mortgages payable, deferred financing costs		32,883	41,800
Intangible liabilities, accumulated amortization		$ 89,200	$ 75,073
Common stock, par value		$ 0.01	$ 0.01
Common stock, shares authorized		900,000,000	900,000,000
Common stock, shares issued		233,135,704	240,427,022
Common stock, shares outstanding		233,135,704	240,427,022
Operating partnership, units outstanding		25,127,003	24,620,279
Percentage of ownership in operating partnership		90.30%
Total assets	[1]	$ 8,755,978	$ 8,917,661
Total liabilities	[1]	$ 3,864,314	3,895,577
Variable Interest Entities [Member]
Percentage of ownership in operating partnership		90.30%
Total assets		$ 1,982,679	1,956,020
Total liabilities		$ 1,253,414	$ 1,264,338
[1]	Represents the consolidated assets and liabilities of Paramount Group Operating Partnership LP, a Delaware limited partnership (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which we are the sole general partner and own approximately 90.3% as of December 31, 2018. The assets and liabilities of the Operating Partnership, as of December 31, 2018, include $1,982,679 and $1,253,414 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 14, Variable Interest Entities (“VIEs”).

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUES:
Rental income	$ 667,360,000	$ 628,883,000	$ 590,161,000
Tenant reimbursement income	56,950,000	52,418,000	44,943,000
Fee and other income	34,651,000	37,666,000	48,237,000
Total revenues	758,961,000	718,967,000	683,341,000
EXPENSES:
Operating	274,078,000	266,136,000	250,040,000
Depreciation and amortization	258,225,000	266,037,000	269,450,000
General and administrative	57,563,000	61,577,000	53,510,000
Transaction related costs	1,471,000	2,027,000	2,404,000
Real estate impairment loss	46,000,000
Total expenses	637,337,000	595,777,000	575,404,000
Operating income	121,624,000	123,190,000	107,937,000
Income from unconsolidated joint ventures	3,468,000	20,185,000	7,413,000
Loss from unconsolidated real estate funds	(269,000)	(6,143,000)	(498,000)
Interest and other income (loss), net	8,117,000	(9,031,000)	6,934,000
Interest and debt expense	(147,653,000)	(143,762,000)	(153,138,000)
Loss on early extinguishment of debt		(7,877,000)	(4,608,000)
Gain on sale of real estate	36,845,000	133,989,000
Unrealized gain on interest rate swaps		1,802,000	39,814,000
Net income before income taxes	22,132,000	112,353,000	3,854,000
Income tax expense	(3,139,000)	(5,177,000)	(1,785,000)
Net income	18,993,000	107,176,000	2,069,000
Less net (income) loss attributable to noncontrolling interests in:
Consolidated joint ventures	(8,182,000)	10,365,000	(15,423,000)
Consolidated real estate fund	(720,000)	(19,797,000)	1,316,000
Operating Partnership	(944,000)	(11,363,000)	2,104,000
Net income (loss) attributable to common stockholders	$ 9,147,000	$ 86,381,000	$ (9,934,000)
INCOME (LOSS) PER COMMON SHARE - BASIC:
Income (loss) per common share	$ 0.04	$ 0.37	$ (0.05)
Weighted average shares outstanding	239,526,694	236,372,801	218,053,062
INCOME (LOSS) PER COMMON SHARE - DILUTED:
Income (loss) per common share	$ 0.04	$ 0.37	$ (0.05)
Weighted average shares outstanding	239,555,636	236,401,548	218,053,062

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 18,993	$ 107,176	$ 2,069
Other comprehensive income (loss):
Change in value of interest rate swaps		7,273	10,618	8,161
Pro rata share of other comprehensive (loss) income of unconsolidated joint ventures	[1]	(129)	160	17
Comprehensive income		26,137	117,954	10,247
Less comprehensive (income) loss attributable to noncontrolling interests in:
Consolidated joint ventures		(8,182)	10,365	(15,423)
Consolidated real estate fund		(665)	(19,797)	1,316
Operating Partnership		(1,605)	(12,430)	2,141
Comprehensive income (loss) attributable to common stockholders		$ 15,685	$ 96,092	$ (1,719)
[1]	Represents foreign currency translation adjustments. No amounts were reclassified from accumulated other comprehensive income (loss) during any of the periods set forth above.

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Previously Reported [Member]	Restatement Adjustment [Member]	Common Stock [Member]	Common Stock [Member]Previously Reported [Member]	Common Stock [Member]Restatement Adjustment [Member]	Additional Paid in Capital [Member]	Additional Paid in Capital [Member]Previously Reported [Member]	Additional Paid in Capital [Member]Restatement Adjustment [Member]	Earnings Less than Distributions [Member]	Earnings Less than Distributions [Member]Previously Reported [Member]	Earnings Less than Distributions [Member]Restatement Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]Previously Reported [Member]	Accumulated Other Comprehensive Income (Loss) [Member]Restatement Adjustment [Member]	Noncontrolling Interest [Member]Consolidated Joint Ventures [Member]	Noncontrolling Interest [Member]Consolidated Joint Ventures [Member]Previously Reported [Member]	Noncontrolling Interest [Member]Consolidated Joint Ventures [Member]Restatement Adjustment [Member]	Noncontrolling Interest [Member]Consolidated Real Estate Fund [Member]	Noncontrolling Interest [Member]Consolidated Real Estate Fund [Member]Previously Reported [Member]	Noncontrolling Interest [Member]Consolidated Real Estate Fund [Member]Restatement Adjustment [Member]	Noncontrolling Interest [Member]Operating Partnership [Member]	Noncontrolling Interest [Member]Operating Partnership [Member]Previously Reported [Member]	Noncontrolling Interest [Member]Operating Partnership [Member]Restatement Adjustment [Member]
Beginning balance at Dec. 31, 2015	$ 4,959,515	$ 5,310,550		$ 2,122	$ 2,122		$ 3,802,858	$ 3,802,858		$ (36,120)	$ (36,120)		$ (7,843)	$ (7,843)		$ 236,849	$ 236,849		$ 63,602	$ 414,637		$ 898,047	$ 898,047
Beginning balance (Deconsolidation of real estate fund investments upon adoption of ASU 2015-02 [Member]) at Dec. 31, 2015			$ (351,035)																		$ (351,035)
Common stock, shares outstanding at Dec. 31, 2015				212,112,000	212,112,000
Net income (loss)	2,069									(9,934)						15,423			(1,316)			(2,104)
Common shares issued upon redemption of common units				$ 178			312,079
Common shares issued upon redemption of common units				17,808,000
Redemption of minority interest in operating partnerships																						(312,257)
Common shares issued under Omnibus share plan, net of shares withheld for taxes				95,000
Dividends and distributions	(100,601)									(83,805)												(16,796)
Contributions from noncontrolling interests	7,651															5,151			2,500
Distributions to noncontrolling interests	(3,636)															(3,636)
Change in value of interest rate swaps	8,161												8,203									(42)
Pro rata share of other comprehensive income (loss) of unconsolidated joint ventures	17												12									5
Amortization of equity awards	12,528						2,034															10,494
Other	243						16			205						1			7			14
Ending balance at Dec. 31, 2016	4,885,947			$ 2,300			4,116,987			(129,654)			372			253,788			64,793			577,361
Common stock, shares outstanding at Dec. 31, 2016				230,015,000
Net income (loss)	107,176									86,381						(10,365)			19,797			11,363
Common shares issued upon redemption of common units				$ 103			172,625
Common shares issued upon redemption of common units				10,359,000
Redemption of minority interest in operating partnerships																						(172,728)
Common shares issued under Omnibus share plan, net of shares withheld for taxes	(154)									(154)
Common shares issued under Omnibus share plan, net of shares withheld for taxes				53,000
Dividends and distributions	(100,840)									(90,266)												(10,574)
Contributions from noncontrolling interests	100,777															96,472			4,305
Distributions to noncontrolling interests	(119,251)															(44,905)			(74,346)
Consolidation of 50 Beale Street	110,007															110,007
Change in value of interest rate swaps	10,618												9,559									1,059
Pro rata share of other comprehensive income (loss) of unconsolidated joint ventures	160												152									8
Amortization of equity awards	18,790						3,085															15,705
Other	8,854						5,251															3,603
Ending balance at Dec. 31, 2017	5,022,084		$ 5,029,170	$ 2,403		$ 2,403	4,297,948		$ 4,297,948	(133,693)		$ (133,164)	10,083		$ 10,083	404,997		$ 404,997	14,549		$ 21,106	425,797		$ 425,797
Ending balance (Basis adjustment upon adoption of ASU 2017-05 [Member]) at Dec. 31, 2017	$ 7,086									529									6,557
Common stock, shares outstanding at Dec. 31, 2017	240,427,022			240,427,000		240,427,000
Net income (loss)	$ 18,993									9,147						8,182			720			944
Common shares issued upon redemption of common units				$ 2			3,459
Common shares issued upon redemption of common units				203,000
Redemption of minority interest in operating partnerships																						(3,461)
Common shares issued under Omnibus share plan, net of shares withheld for taxes	(213)									(213)
Common shares issued under Omnibus share plan, net of shares withheld for taxes				61,000
Repurchases of common shares	(105,383)			$ (76)			(105,307)
Repurchases of common shares				(7,555,000)
Dividends and distributions	(105,746)									(95,506)												(10,240)
Contributions from noncontrolling interests	45,116																		45,116
Distributions to noncontrolling interests	(18,184)															(18,184)
Change in value of interest rate swaps	7,273												6,605									668
Pro rata share of other comprehensive income (loss) of unconsolidated joint ventures	(129)												(67)						(55)			(7)
Amortization of equity awards	20,937						2,943															17,994
Other	(170)						2,713			(170)												(2,713)
Ending balance at Dec. 31, 2018	$ 4,891,664			$ 2,329			$ 4,201,756			$ (219,906)			$ 16,621			$ 394,995			$ 66,887			$ 428,982
Common stock, shares outstanding at Dec. 31, 2018	233,135,704			233,136,000

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Stockholders Equity [Abstract]
Dividends and distributions, Per share and unit	$ 0.40	$ 0.38	$ 0.38

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 18,993,000	$ 107,176,000	$ 2,069,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	258,225,000	266,037,000	269,450,000
Straight-lining of rental income	(59,061,000)	(54,453,000)	(82,568,000)
Real estate impairment loss	46,000,000
Gain on sale of real estate	(36,845,000)	(133,989,000)
Amortization of stock-based compensation expense	19,646,000	15,922,000	11,278,000
Amortization of above and below-market leases, net	(16,059,000)	(19,523,000)	(9,536,000)
Amortization of deferred financing costs	11,023,000	11,188,000	6,804,000
Distributions of earnings from unconsolidated joint ventures	6,207,000	5,700,000	8,121,000
Income from unconsolidated joint ventures	(3,468,000)	(20,185,000)	(7,413,000)
Realized and unrealized losses (gains) on marketable securities	1,604,000	(4,664,000)	(494,000)
Distributions of earnings from unconsolidated real estate funds	330,000	342,000	392,000
Loss from unconsolidated real estate funds	269,000	6,143,000	498,000
Valuation allowance on preferred equity investment		19,588,000
Loss on early extinguishment of debt		7,877,000	4,608,000
Unrealized gain on interest rate swaps		(1,802,000)	(39,814,000)
Other non-cash adjustments	288,000	(470,000)	966,000
Changes in operating assets and liabilities:
Accounts and other receivables	(2,994,000)	(1,000,000)	(4,521,000)
Deferred charges	(31,861,000)	(33,295,000)	(15,701,000)
Other assets	(57,216,000)	10,243,000	(12,037,000)
Accounts payable and accrued expenses	4,200,000	6,305,000	11,479,000
Other liabilities	(2,758,000)	2,971,000	4,702,000
Net cash provided by operating activities	156,523,000	190,111,000	148,283,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sale of real estate	349,013,000	540,333,000
Additions to real estate	(137,915,000)	(86,434,000)	(132,686,000)
Investment in and contributions of capital to unconsolidated joint ventures	(29,883,000)	(28,791,000)
Sales of marketable securities	24,794,000	27,261,000	2,353,000
Purchases of marketable securities	(20,019,000)	(29,248,000)	(2,722,000)
Escrow deposits and loans receivable for Residential Development Fund	(15,680,000)
Deposit on real estate	(10,000,000)
Contributions of capital to unconsolidated real estate funds	(3,779,000)	(790,000)	(1,780,000)
Distributions of capital from unconsolidated real estate funds	79,000	14,584,000
Acquisitions of real estate		(161,184,000)	(517,823,000)
Distributions of capital from unconsolidated joint ventures		20,000,000
Net cash provided by (used in) by investing activities	156,610,000	295,731,000	(652,658,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchases of common shares	(102,863,000)
Dividends paid to common stockholders	(94,991,000)	(89,276,000)	(82,105,000)
Contributions from noncontrolling interests	45,116,000	100,777,000	7,651,000
Repayment of loans to affiliates	(27,299,000)
Distributions to noncontrolling interests	(18,184,000)	(119,251,000)	(3,636,000)
Proceeds from notes and mortgages payable	16,700,000	991,556,000	1,362,414,000
Distributions paid to common unitholders	(10,064,000)	(11,504,000)	(18,412,000)
Debt issuance costs and other	(6,564,000)	(7,490,000)	(29,387,000)
Repayments of notes and mortgages payable		(1,044,821,000)	(689,269,000)
Repayment of borrowings under revolving credit facility		(290,000,000)	(130,000,000)
Borrowings under revolving credit facility		60,000,000	340,000,000
Settlement of interest rate swap liabilities		(19,425,000)	(23,654,000)
Transfer tax refund in connection with the acquisition of noncontrolling interests		9,555,000
Loss on early extinguishment of debt		(7,877,000)	(4,608,000)
Purchase of marketable securities in connection with the defeasance of notes and mortgages payable			(210,000,000)
Net cash (used in) provided by financing activities	(198,149,000)	(427,756,000)	518,994,000
Net increase in cash and cash equivalents and restricted cash	114,984,000	58,086,000	14,619,000
Cash and cash equivalents and restricted cash at beginning of period	250,425,000	192,339,000	185,707,000
Decrease in cash due to deconsolidation of real estate fund investments			(7,987,000)
Cash and cash equivalents and restricted cash at end of period	365,409,000	250,425,000	192,339,000
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	219,381,000	162,965,000	143,884,000
Restricted cash at beginning of period	31,044,000	29,374,000	41,823,000
Cash and cash equivalents and restricted cash at beginning of period	250,425,000	192,339,000	185,707,000
Cash and cash equivalents at end of period	339,653,000	219,381,000	162,965,000
Restricted cash at end of period	25,756,000	31,044,000	29,374,000
Cash and cash equivalents and restricted cash at end of period	365,409,000	250,425,000	192,339,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	136,452,000	132,361,000	140,111,000
Cash payments for income taxes, net of refunds	4,049,000	5,048,000	2,095,000
NON-CASH TRANSACTIONS:
Common shares issued upon redemption of commons units	3,461,000	172,728,000	312,257,000
Dividends and distributions declared but not yet paid	25,902,000	25,211,000	25,151,000
Write-off of fully amortized and/or depreciated assets	4,158,000	9,684,000	11,431,000
Basis adjustment to investment in unconsolidated joint ventures upon adoption of ASU 2017-05	7,086,000
Additions to real estate included in accounts payable and accrued expenses	19,872,000	10,413,000	12,104,000
Change in value of interest rate swaps	$ (7,273,000)	(10,618,000)	(8,161,000)
Consolidation (deconsolidation) of real estate and real estate fund investments		102,512,000	(396,697,000)
Assumption of notes and mortgages payable		$ 228,000,000
Transfer of real estate to assets held for sale			(346,685,000)
Marketable securities transferred in connection with the defeasance of notes and mortgages payable			214,608,000
Defeasance of notes and mortgages payable			$ (210,000,000)

Organization and Business

Organization and Business	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization And Business	As used in these consolidated financial statements, unless otherwise indicated, all references to “we,” “us,” “our,” the “Company,” and “Paramount” refer to Paramount Group, Inc., a Maryland corporation, and its consolidated subsidiaries, including Paramount Group Operating Partnership LP (the “Operating Partnership”), a Delaware limited partnership. We are a fully-integrated real estate investment trust (“REIT”) focused on owning, operating, managing, acquiring and redeveloping high-quality, Class A office properties in select central business district submarkets of New York City, Washington, D.C. and San Francisco. As of December 31, 2018, our portfolio consisted of 12 Class A office properties aggregating approximately 11.9 million square feet. We conduct our business through, and substantially all of our interests in properties and investments are held by, the Operating Partnership. We are the sole general partner of, and owned approximately 90.3% of, the Operating Partnership as of December 31, 2018.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Basis Of Presentation And Significant Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	2. Basis of Presentation and Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and with the rules and regulations of the Securities and Exchange Commission (the “SEC”). These consolidated financial statements include the accounts of Paramount and its consolidated subsidiaries, including the Operating Partnership. All significant intercompany balances and transactions have been eliminated in consolidation . Significant Accounting Policies Real Estate Real estate is carried at cost less accumulated depreciation and amortization. Betterments, major renovations and certain costs directly related to the improvement of real estate are capitalized. Maintenance and repair expenses are charged to expense as incurred. Depreciation is recognized on a straight-line basis over estimated useful lives of the assets, which range from 5 to 40 years. Tenant improvements are amortized on a straight-line basis over the lives of the related leases, which approximate the useful lives of the assets. Upon the acquisition of real estate, we assess the fair value of acquired assets (including land, buildings and improvements, identified intangibles, such as acquired above-market leases and acquired in-place leases) and acquired liabilities (such as acquired below-market leases) and allocate the purchase price based on these assessments. We assess fair value based on estimated cash flow projections that utilize appropriate discount and capitalization rates and available market information. Estimates of future cash flows are based on a number of factors including historical operating results, known trends, and market/economic conditions. We record acquired intangible assets (including acquired above-market leases and acquired in-place leases) and acquired intangible liabilities (including below-market leases) at their estimated fair value. We amortize acquired above-market and below-market leases as a decrease or increase to rental income, respectively, over the lives of the respective leases. Amortization of acquired in-place leases is included as a component of “depreciation and amortization”. Our properties, including any related intangible assets, are individually reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Impairment analyses are based on our current plans, intended holding periods and available market information at the time the analyses are prepared. An impairment exists when the carrying amount of an asset exceeds the aggregate projected future cash flows over the anticipated holding period on an undiscounted basis. An impairment loss is measured based on the excess of the property’s carrying amount over its estimated fair value. Estimates of fair value are determined using discounted cash flow models, which consider, among other things, anticipated holding periods, current market conditions and utilize unobservable quantitative inputs, including appropriate capitalization and discount rates. If our estimates of the projected future cash flows, anticipated holding periods, or market conditions change, our evaluation of impairment losses may be different and such differences could be material to our consolidated financial statements. The evaluation of anticipated cash flows is subjective and is based, in part, on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results. Plans to hold properties over longer periods decrease the likelihood of recording impairment losses. Real estate and related intangibles are classified as held for sale when all the necessary criteria are met. The criteria include (i) management, having the authority to approve action, commits to a plan to sell the property in its present condition, (ii) the sale of the property is at a price reasonable in relation to its current fair value and (iii) the sale is probable and expected to be completed within one year. Real estate and the related intangibles held for sale are carried at the lower of carrying amounts or estimated fair value less disposal costs. Depreciation and amortization is not recognized on real estate and related intangibles classified as assets held for sale. Variable Interest Entities (“VIEs”) and Investments in Unconsolidated Joint Ventures and Funds We consolidate VIEs in which we are considered to be the primary beneficiary. Entities are considered to be the primary beneficiary if they have both of the following characteristics: (i) the power to direct the activities that, when taken together, most significantly impact the VIE’s performance, and (ii) the obligation to absorb losses and right to receive the returns from the VIE that would be significant to the VIE. We consolidate entities that are not VIEs where we have significant decision making control over operations. Our judgment with respect to our level of influence or control of an entity involves the consideration of various factors including the form of our ownership interest, our representation in the entity’s governance, the size of our investment, estimates of future cash flows, our ability to participate in policy making decisions and the rights of the other investors to participate in the decision making process and to replace us as manager and/or liquidate the joint venture, if applicable. We account for investments under the equity method when the requirements for consolidation are not met, and we have significant influence over the operations of the investee. Equity method investments, which consists of investments in unconsolidated joint ventures and funds are initially recorded at cost and subsequently adjusted for our share of net income or loss and cash contributions and distributions each period. To the extent that our cost basis is different than our share of the equity in the equity method investment, the basis difference allocated to depreciable assets is amortized into “income from unconsolidated joint ventures” over the estimated useful life of the related asset. Investments that do not qualify for consolidation or equity method accounting are accounted for under the cost method. Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand and short-term highly liquid investments with original maturities of three months or less. The majority of our cash and cash equivalents are held at major commercial banks, which may at times exceed the Federal Deposit Insurance Corporation limit. To date, we have not experienced any losses on our invested cash. Restricted Cash Restricted cash consists primarily of security deposits held on behalf of our tenants, cash escrowed under loan agreements for debt service, real estate taxes, property insurance and capital improvements and cash restricted in connection with our deferred compensation plan. Preferred Equity Investments Preferred equity investments are comprised of investments in certain partnerships that own real estate. We evaluate the collectibility of preferred equity investments when changes in events or circumstances, including delinquencies, loss experience and collateral quality, indicate that it is probable we will be unable to collect all amounts due under the contractual terms. If a preferred equity investment is considered impaired, a valuation allowance is measured and recorded based on the excess of the carrying amount of the investment over the net realizable value of the collateral. Marketable Securities Allowance for Doubtful Accounts We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of tenants to make required payments under the lease agreements. We also maintain an allowance for deferred rent receivable, as needed. This receivable arises from earnings recognized in excess of amounts currently due under the lease agreements. Management exercises judgment in establishing these allowances and considers payment history and current credit status in developing these estimates. Deferred Charges Deferred charges include deferred leasing costs and deferred financing costs related to our revolving credit facility. Deferred leasing costs consist of fees and direct costs related to successful leasing activities. Such costs are amortized on a straight-line basis over the lives of the related leases and recognized in our consolidated statements of income as a component of “depreciation and amortization”. Deferred financing costs consist of fees and direct costs incurred in obtaining our revolving credit facility. Such costs are amortized over the term of the revolving credit facility and are recognized as a component of “interest and debt expense” on our consolidated statements of income. Deferred Financing Costs Related to Notes and Mortgages Payable Deferred financing costs related to notes and mortgages payable consists of fees and direct costs incurred in obtaining such financing and are recorded as a reduction of our notes and mortgages payable. Such costs are amortized over the terms of the related debt agreements and recognized as a component of “interest and debt expense” on our consolidated statements of income. Derivative Instruments and Hedging Activities We record all derivatives on our consolidated balance sheets at fair value in accordance with ASC Topic 815, Derivatives and Hedging Fair Value of Financial Instruments Accounting Standard Codification (“ASC”) Topic 820, Fair Value Measurement and Disclosures , defines fair value and establishes a framework for measuring fair value. The objective of fair value is to determine the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). ASC Topic 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: Level 1 – quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities; Level 2 – observable prices that are based on inputs not quoted in active markets, but corroborated by market data; and Level 3 – unobservable inputs that are used when little or no market data is available. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment is necessary to interpret Level 2 and 3 inputs in determining the fair value of our financial and non-financial assets and liabilities. Accordingly, our fair value estimates, which are made at the end of each reporting period, may be different than the amounts that may ultimately be realized upon sale or disposition of these assets or settlement of these liabilities. We use the following methods and assumptions in estimating fair value for financial instruments that are presented at fair value on our consolidated balance sheets: Interest Rate Swaps Interest rate swaps are valued by a third-party specialist using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each swap. This analysis reflects the contractual terms of the interest rate swaps and uses observable market-based inputs, including interest rate curves and implied volatilities. Interest rate swaps are classified as Level 2 in the fair value hierarchy. We use the following methods and assumptions in estimating fair value for financial instruments that are not presented at fair value on our consolidated balance sheets, but are disclosed in the notes to our consolidated financial statements: Preferred Equity Investments Preferred equity investments are valued by a third-party specialist using the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value. We use significant unobservable inputs in determining the discount rate used in the fair value measurement of these investments, including a credit spread and preferred rate of return. Preferred equity investments are classified as Level 3 in the fair value hierarchy. Notes and Mortgages Payable Notes and mortgages payable are valued by a third-party specialist using the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value at the appropriate current risk adjusted interest rate. For floating rate debt, we use forward rates derived from observable market yield curves to project the expected cash payments we would be required to make under the instrument. The notes and mortgages payable are classified as Level 2 in fair value hierarchy. The carrying value of marketable securities is determined using quoted prices in active markets. The carrying values of all other financial instruments on our consolidated balance sheets, including cash and cash equivalents, restricted cash, accounts and other receivable and accounts payable and accrued expenses, approximate their fair values due to the short-term nature of these instruments. Revenue Recognition Rental Income Rental income includes base rents that each tenant pays in accordance with the terms of its respective lease and is reported on a straight-line basis over the non-cancellable term of the lease, which includes the effects of rent steps and rent abatements under the leases. We commence rental revenue recognition when the tenant takes possession of the leased space or controls the physical use of the leased space and the leased space is substantially ready for its intended use. Differences between rental income recognized and amounts due under the respective lease agreements are recorded as an increase or decrease to “deferred rent receivable” on our consolidated balance sheets. Rental income also includes the amortization of acquired above and below-market leases, net. Tenant Reimbursement Income Tenant reimbursement income includes revenues arising from tenant leases, which provide for the recovery of all or a portion of the operating expenses and real estate taxes of the property. This revenue is earned in the same period as the expenses are incurred. Fee and Other Income Fee income includes (i) property management fees, (ii) asset management fees and (iii) fees related to acquisitions, dispositions and leasing services and (iv) other fee income earned pursuant to contractual agreements. Fee income is recognized as and when we satisfy our performance obligations pursuant to contractual agreements. Property management and asset management services are provided continuously over time and revenue is recognized over that time. Fee income relating to acquisitions, dispositions and leasing services is recognized upon completion of the acquisition, disposition or leasing services as required in the contractual agreements. The amount of fee income to be recognized is stated in the contract as a fixed price or as a stated percentage of revenues, contributed capital or transaction price. Other income includes lease termination income, income from tenant requested services, including overtime heating and cooling and parking income. Lease termination income could result from a lessee terminating a lease prior to the stated terms in their agreements. To the extent a lease term is modified, any incremental fees or increased lease payments received as a result of the modification are recognized over the remaining lease term based on the relevant facts and circumstances. Gains and Losses on Sale of Real Estate Gains and losses on the sale of real estate are recognized pursuant to ASC Topic 610-20, Gains and Losses from the Derecognition of Nonfinancial Assets Stock-based Compensation We account for stock-based compensation in accordance with ASC Topic 718, Compensation – Stock Compensation Income Taxes We operate and have been organized in conformity with the requirements for qualification and taxation as a REIT for U.S. federal income tax purposes. So long as we qualify as a REIT, we generally will not be subject to U.S. federal income tax on our net income that we distribute currently to our stockholders. In order to maintain our qualification as a REIT, we are required under the Internal Revenue Code of 1986, as amended, to distribute at least 90% of our taxable income (without regard to the deduction for dividends paid and excluding net capital gains) to our stockholders and meet certain other requirements. If, with respect to any taxable year, we fail to maintain our qualification as a REIT, and we are not entitled to relief under the relevant statutory provisions, we would be subject to income tax at regular corporate tax rates. Even if we qualify as a REIT, we may also be subject to certain state, local and franchise taxes. Under certain circumstances, U.S. federal income tax may be due on our undistributed taxable income. We treat certain consolidated subsidiaries, and may in the future elect to treat newly formed subsidiaries, as taxable REIT subsidiaries (“TRSs”). TRSs may participate in non-real estate related activities and/or perform non-customary services for tenants and are subject to federal and state income tax at regular corporate tax rates. Our TRSs had a combined current income tax expense of approximately $622,000, $5,758,000 and $780,000 for the years ended December 31, 2018, 2017 and 2016, respectively. In addition, our TRSs had a combined deferred income tax expense of $87,000 for the year ended December 31, 2018 and deferred income tax benefits of $922,000 and $479,000 for the years ended December 31, 2017 and 2016, respectively. The following table reconciles net income (loss) attributable to Paramount Group, Inc. to estimated taxable income for the years ended December 31, 2018, 2017 and 2016. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Net income (loss) attributable to Paramount Group, Inc. $ 9,147 $ 86,381 $ (9,934 ) Book to tax differences: Straight-lining of rents and amortization of above and below-market leases, net (48,604 ) (44,083 ) (51,880 ) Depreciation and amortization 92,512 96,991 95,489 Stock-based compensation 17,847 14,441 9,673 Real estate impairment loss 41,788 - - Gain on sale of real estate (14,381 ) (95,182 ) - Write-off of and valuation allowance on preferred equity investment (3,574 ) 4,327 - Earnings of unconsolidated joint ventures, including real estate investments 179 (8,600 ) (3,513 ) Swap breakage costs - (1,487 ) (25,367 ) Unrealized gain on interest rate swaps - (860 ) (4,651 ) Other, net (8,240 ) 1,885 13,295 Estimated taxable income $ 86,674 $ 53,813 $ 23,112 The following table sets forth the characterization of dividend distributions for federal income tax purposes for the years ended December 31, 2018, 2017 and 2016 For the Year Ended December 31, 2018 2017 2016 Amount % Amount % Amount % Ordinary income $ 0.286 (1) 72.4 % $ 0.195 51.3 % $ 0.107 28.2 % Long-term capital gain 0.074 18.7 % 0.034 8.9 % - - Return of capital 0.035 8.9 % 0.151 39.8 % 0.273 71.8 % Total $ 0.395 (2) 100.0 % $ 0.380 (2) 100.0 % $ 0.380 (2) 100.0 % (1) Represents amounts treated as “qualified REIT dividends” for purposes of Internal Revenue Code 199A. (1) The fourth quarter dividend for the years ended December 31, 2018, 2017 and 2016 of $0.100, $0.095 and $0.095 per share, respectively, were paid in January of the subsequent years and are allocable to the subsequent years for federal income tax purposes. Segments Our reportable segments are separated by region based on the three regions in which we conduct our business: New York, Washington, D.C. and San Francisco. Our determination of segments is aligned with our method of internal reporting and the way our Chief Executive Officer, who is also our Chief Operating Decision Maker, makes key operating decisions, evaluates financial results and manages our business. See Note 25, Segments . Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and the notes thereto. Actual results could differ materially from those estimates. Reclassification Certain prior year balances have been reclassified to conform to current year presentation. Recently Issued Accounting Pronouncements Not Materially Impacting Our Financial Statements In May 2014, the Financial Accounting Standard’s Board (“FASB”) issued ASU 2014-09, an update to ASC Topic 606, Revenue from Contracts with Customers Revenues In June 2016, the FASB issued ASU 2016-13, an update to ASC Topic 326, Financial Instruments – Credit Losses Leases In May 2017, the FASB issued ASU 2017-09, an update to ASC Topic 718, Compensation – Stock Compensation In August 2018, the FASB issued ASU 2018-13, an update to ASC Topic 820, Fair Value Measurements In October 2018, the FASB issued ASU 2018-16, an update to ASC Topic 815, Derivatives and Hedging. Derivatives and Hedging Recently Issued Accounting Pronouncements Impacting or Potentially Impacting Our Financial Statements In February 2016, the FASB issued ASU 2016-02, an update to ASC Topic 842, Leases While accounting for lessors under ASU 2016-02 is substantially similar to existing lease accounting guidance, lessors are required to separate payments received pursuant to a lease between lease components (rental income) and non-lease components (revenue related to various services we provide). In July 2018, the FASB issued ASU 2018-11, which provided lessors with a practical expedient to not separate lease and non-lease components, if certain criteria are met. We believe we meet such criteria and upon the adoption of ASU 2016-02, we will elect this practical expedient. Furthermore, ASU 2016-02 also updates the definition of initial direct costs for both lessees and lessors to include only incremental costs of a lease that would not have been incurred if the lease had not been obtained. As a result, upon adoption of ASU 2016-02 on January 1, 2019, we will no longer be able to capitalize internal leasing costs and will have to expense them instead. We had capitalized internal leasing costs of $5,653,000, $7,003,000 and $5,027,000 for the years ended December 31, 2018, 2017 and 2016, respectively. In December 2018, the FASB issued ASU 2018-20, an update to ASC Topic 842, Leases In November 2016, the FASB issued ASU 2016-18, an update to ASC Topic 230, Statement of Cash Flows In February 2017, the FASB issued ASU 2017-05, an update to ASC Topic 610, Other Income Investments in Unconsolidated Joint Ventures In October 2018, the FASB issued ASU 2018-17, an update to ASC Topic 810, Consolidations. eporting entities to consider indirect interests held by related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety in determining whether a decision-making fee is a variable interest. ASU 2018-17 is effective for permitted.

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2018
Assets Of Disposal Group Including Discontinued Operation [Abstract]
Dispositions	3 . Dispositions 2099 Pennsylvania Avenue On August 9, 2018, we completed the sale of 2099 Pennsylvania Avenue, a 208,776 square foot, Class A office building in Washington, D.C. for $219,900,000 and recognized a gain of $35,836,000, which is included as a component of “gain on sale of real estate” on our consolidated statement of income for the year ended December 31, 2018. 425 Eye Street On September 27, 2018, we completed the sale of 425 Eye Street, a 372,552 square foot, Class A office building in Washington, D.C. for $157,000,000 and recognized a gain of $1,009,000, which is included as a component of “gain on sale of real estate” on our consolidated statement of income for the year ended December 31, 2018. Waterview On May 3, 2017, we completed the sale of Waterview, a 636,768 square foot, Class A office building in Rosslyn, Virginia for $460,000,000 and recognized a gain of $110,583,000, which is included as a component of “gain on sale of real estate” on our consolidated statement of income for the year ended December 31, 2017.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	4 . Acquisitions 111 Sutter Street On February 7, 2019, we completed the acquisition of 111 Sutter Street, a 293,000 square foot office building in San Francisco, California. Simultaneously to closing, we brought in a joint venture partner to acquire 51.0% of the equity interest. We will retain the remaining 49.0% equity interest and manage and lease the asset. The purchase price was $227,000,000. In connection with the acquisition, the joint venture completed a $138,200,000 financing of the property. The four-year loan is interest only at LIBOR plus 215 basis points and has three one-year extension options. 50 Beale Street On July 17, 2017, we and a new joint venture in which we have a 36.6% interest, acquired, through a series of transactions, a 62.2% interest in 50 Beale Street, a 660,625 square foot, Class A office building in San Francisco, California. Subsequent to the acquisition, we own a direct 13.2% interest in the property and the new joint venture owns the remaining 49.0% interest. Accordingly, our economic interest in the property is 31.1%. The acquisition valued the property at $517,500,000 and included the assumption of $228,000,000 of existing debt.

Investments in Unconsolidated J

Investments in Unconsolidated Joint Ventures	12 Months Ended
	Dec. 31, 2018
Equity Method Investments And Joint Ventures [Abstract]
Investments in Unconsolidated Joint Ventures	5. Investments in Unconsolidated Joint Ventures Prior to March 14, 2018, RDF, in which we have a 7.4% interest, owned 20.0% of One Steuart Lane (the “Property”). On March 14, 2018, RDF transferred its 20.0% interest to a new joint venture in which it owns a 75.0% interest. Separately on March 14, 2018, RDF acquired an additional 10.0% interest in the Property from its existing partner. Subsequent to these transactions RDF owns a 25.0% economic interest in the Property, comprised of the newly acquired 10.0% interest and an indirect 15.0% interest it owns through the joint venture. Accordingly, RDF was required to consolidate its 75.0% interest in the joint venture that owns 20.0% of the Property, and reflect the 25.0% interest in this venture (5.0% economic interest in the Property) it does not own as noncontrolling interests. We continue to consolidate our 7.4% interest in RDF and reflect the 92.6% interest we do not own as noncontrolling interests. As of December 31, 2018, our economic interest in the Property was 1.85%. The following tables summarize our investments in unconsolidated joint ventures as of the dates thereof and the income or loss from these investments for the periods set forth below. (Amounts in thousands) Paramount As of December 31, Our Share of Investments: Ownership 2018 2017 712 Fifth Avenue (1) 50.0% $ - $ - 60 Wall Street (2) 5.0% 22,353 25,083 One Steuart Lane ( 2 ) 25.0% ( 3 ) 52,923 ( 4 ) 16,031 Oder-Center, Germany ( 2 ) 9.5% 3,587 3,648 Investments in unconsolidated joint ventures $ 78,863 $ 44,762 (Amounts in thousands) For the Year Ended December 31, Our Share of Net Income (Loss): 2018 2017 2016 712 Fifth Avenue (1) $ 3,901 $ 20,072 $ 7,335 60 Wall Street (2) (518 ) (152 ) - One Steuart Lane ( 2 ) (18 ) 182 - Oder-Center, Germany ( 2 ) 103 83 78 Income from unconsolidated joint ventures $ 3,468 $ 20,185 $ 7,413 (1) As of December 31, 2018, our basis in the partnership that owns 712 Fifth Avenue, was negative $17,611 resulting from distributions made to us in excess of our share of earnings recognized. Accordingly, we no longer recognize our proportionate share of earnings from the venture because we have no further obligation to fund additional capital to the venture. Instead, we only recognize earnings to the extent we receive cash distributions from the venture. (2) As of December 31, 2018, the carrying amount of our investment in 60 Wall Street, One Steuart Lane and Oder Center, Germany is greater than our share of equity in these investments by $2,772, $692, $5,055, respectively, and primarily represents the unamortized portion of our capitalized acquisition costs. Basis differences allocated to depreciable assets are being amortized into “income from unconsolidated joint ventures” over the estimated useful life of the related assets. (3) Represents RDF’s economic interest in the Property. (6) Includes a $7,086 basis adjustment which was recorded upon the adoption of ASU 2017-05 on January 1, 2018. The following tables provide the combined summarized financial information of our unconsolidated joint ventures as of the dates and for the periods set forth below. (Amounts in thousands) As of December 31, Balance Sheets: 2018 2017 Real estate, net $ 1,236,989 $ 1,196,116 Intangible assets 97,658 126,422 Other assets 91,552 81,596 Total assets $ 1,426,199 $ 1,404,134 Notes and mortgages payable, net $ 887,882 $ 886,902 Other liabilities 22,310 14,196 Total liabilities 910,192 901,098 Equity 516,007 503,036 Total liabilities and equity $ 1,426,199 $ 1,404,134 (Amounts in thousands) For the Year Ended December 31, Income Statements: 2018 2017 2016 Rental income $ 113,156 $ 113,643 $ 54,420 Tenant reimbursement income 27,178 25,161 4,495 Fee and other income 7,146 1,622 1,882 Total revenues 147,480 140,426 60,797 Operating 53,417 51,390 23,670 Depreciation and amortization 48,452 46,409 12,509 Total expenses 101,869 97,799 36,179 Operating income 45,611 42,627 24,618 Interest and other income 803 381 68 Interest and debt expense (39,406 ) (33,461 ) (12,212 ) Unrealized gain on interest rate swaps - 1,896 4,109 Net income before income taxes 7,008 11,443 16,583 Income tax expense (10 ) (2 ) (10 ) Net income $ 6,998 $ 11,441 $ 16,573

Investments in Unconsolidated R

Investments in Unconsolidated Real Estate Funds	12 Months Ended
	Dec. 31, 2018
Real Estate Fund [Abstract]
Investments in Unconsolidated Real Estate Funds	6. Investments in Unconsolidated Real Estate Funds We are the general partner and investment manager of Paramount Group Real Estate Fund VII, L.P. (“Fund VII”) and its parallel fund, Paramount Group Real Estate Fund VII-H, L.P (“Fund VII-H”), our Property Funds. As of December 31, 2018, Fund VII and Fund VII-H’s sole asset, which they collectively owned 100% of, was 0 Bond Street, a 64,532 square foot creative office building in the NoHo submarket of Manhattan. As of December 31, 2018, our combined ownership interest in Fund VII and Fund VII-H was approximately 7.2%. On January 25, 2019, Fund VII and Fund VII-H sold 0 Bond Street for $130,500,000. We are also the general partner and investment manager of Paramount Group Real Estate Fund VIII, L.P. (“Fund VIII”), our Alternative Investment Fund, which invests in mortgage and mezzanine loans and preferred equity investments. Fund VIII completed its final closing in April 2016 with $775,200,000 in capital commitments, of which $614,450,000 has been called and substantially invested as of December 31, 2018 and an additional $74,391,000 is reserved for funding future draws on existing mezzanine loans and preferred equity investments. These investments have various stated interest rates ranging from 5.50% to 9.61% and maturities ranging from October 2019 to December 2027. Fund VIII’s investment period is scheduled to end in April 2019, unless extended by us until April 2020. As of December 31, 2018, our ownership interest in Fund VIII was approximately 1.3%. The following tables summarize our investments in these unconsolidated real estate funds as of the dates thereof and the income or loss recognized for the periods set forth below. As of December 31, (Amounts in thousands) 2018 2017 Our Share of Investments: Property Funds $ 2,340 $ 2,429 Alternative Investment Fund 8,012 4,824 Investments in unconsolidated real estate funds $ 10,352 $ 7,253 For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Our Share of Net Loss: Net investment income (loss) $ 291 $ 236 $ (324 ) Net realized loss - (126 ) - Net unrealized loss (560 ) (663 ) (1,706 ) Carried interest - (5,590 ) 1,532 Loss from unconsolidated real estate funds $ (269 ) $ (6,143 ) $ (498 ) In December 2018, we completed an initial closing of Paramount Group Real Estate Fund X, L.P. (“Fund X”), with $167,000,000 in capital commitments, including $10,000,000 from us. As of December 31, 2018, none of the capital has been called. The following tables provide the summarized financial information of our unconsolidated real estate funds, excluding Fund X, as of the dates and for the periods set forth below. (Amounts in thousands) As of December 31, Balance Sheets: 2018 2017 Real estate investments $ 645,013 $ 405,931 Cash and cash equivalents 10,791 5,076 Other assets 10 74 Total assets $ 655,814 $ 411,081 Other liabilities $ 1,483 $ 1,308 Total liabilities 1,483 1,308 Equity 654,331 409,773 Total liabilities and equity $ 655,814 $ 411,081 (Amounts in thousands) For the Year Ended December 31, Income Statements: 2018 2017 2016 Investment income $ 33,814 $ 29,013 $ 20,484 Investment expenses 10,587 7,086 7,466 Net investment income 23,227 21,927 13,018 Net realized losses - (72,134 ) - Previously recorded unrealized losses - 35,682 - Net unrealized (losses) gains (4,656 ) (6,266 ) 14,275 Income (loss) from real estate fund investments $ 18,571 $ (20,791 ) $ 27,293

Preferred Equity Investments

Preferred Equity Investments	12 Months Ended
	Dec. 31, 2018
Schedule Of Investments [Abstract]
Preferred Equity Investments	7. Preferred Equity Investments We own a 24.4% interest in PGRESS Equity Holdings L.P., an entity that owns certain preferred equity investments that are consolidated into our consolidated financial statements. The following table summarizes our preferred equity investments. (Amounts in thousands, except square feet) Paramount Dividend Initial As of December 31, Preferred Equity Investment Ownership Rate Maturity 2018 2017 470 Vanderbilt Avenue (1) 24.4% 10.3% Feb-2019 $ 36,042 $ 35,817 2 Herald Square (2) n/a n/a n/a - 19,588 36,042 55,405 Less: valuation allowance (2) - (19,588 ) Total preferred equity investments, net $ 36,042 $ 35,817 (1) Represents a preferred equity investment in a partnership that owns 470 Vanderbilt Avenue, a 686,000 square foot office building in Brooklyn, New York. The preferred equity has a dividend rate of 10.3%, of which 8.0% was paid in cash through February 2016 and the unpaid portion accreted to the balance of the investment. Subsequent to February 2016, the entire 10.3% dividend is being paid in cash. (2) Represents a preferred equity investment in a partnership that owned 2 Herald Square, a 369,000 square foot office and retail property in Manhattan. In April 2017, the borrower defaulted on the obligation to extend the maturity date or redeem the preferred equity investment and accordingly, we had recorded a valuation allowance of $19,588. In May 2018, the senior lender foreclosed out our interest and accordingly, we wrote off our preferred equity investment and the related valuation allowance.

Intangible Assets and Liabiliti

Intangible Assets and Liabilities	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets and Liabilities	8. Intangible Assets and Liabilities The following table summarizes our intangible assets (acquired above-market leases and acquired in-place leases) and intangible liabilities (acquired below-market leases) and the related amortization as of the dates and for the periods set forth below. As of December 31, (Amounts in thousands) 2018 2017 Intangible assets: Gross amount $ 515,889 $ 553,063 Accumulated amortization (245,444 ) (200,857 ) $ 270,445 $ 352,206 Intangible liabilities: Gross amount $ 185,191 $ 205,101 Accumulated amortization (89,200 ) (75,073 ) $ 95,991 $ 130,028 For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Amortization of above and below-market leases, net (component of “rental income”) $ 16,059 $ 19,523 $ 9,536 Amortization of acquired in-place leases (component of “depreciation and amortization”) $ 58,814 $ 76,016 $ 94,935 The following table sets forth annual amortization of acquired above and below-market leases, net and amortization of acquired in-place leases for each of the five succeeding years commencing from January 1, 2019. (Amounts in thousands) For the Year Ending December 31, Above and Below-Market Leases, Net In-Place Leases 2019 $ 11,851 $ 49,378 2020 6,654 38,738 2021 3,361 28,150 2022 892 23,598 2023 4,407 18,917

Debt

Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	9. Debt On January 10, 2018, we amended and restated the credit agreement governing our revolving credit facility. The maturity date of the revolving credit facility was extended from November 2018 to January 2022, with two six-month extension options, and the capacity was increased to $1,000,000,000 from $800,000,000. The interest rate on the revolving credit facility, at current leverage levels, was lowered by 10 basis points from LIBOR plus 125 basis points to LIBOR plus 115 basis points, and the facility fee was reduced by 5 basis points from 25 basis points to 20 basis points. The following table summarizes our outstanding debt. Maturity Fixed/ Interest Rate as of As of December 31, (Amounts in thousands) Date Variable Rate December 31, 2018 2018 2017 Notes and mortgages payable: 1633 Broadway Dec-2022 Fixed (1) 3.54 % $ 1,000,000 $ 1,000,000 Dec-2022 L + 175 bps 4.10 % 46,800 (2) 30,100 (2) 3.56 % 1,046,800 1,030,100 One Market Plaza (3) Feb-2024 Fixed 4.03 % 975,000 975,000 1301 Avenue of the Americas Nov-2021 Fixed 3.05 % 500,000 500,000 Nov-2021 L + 180 bps 4.18 % 350,000 350,000 3.51 % 850,000 850,000 31 West 52nd Street May-2026 Fixed 3.80 % 500,000 500,000 50 Beale Street (3) Oct-2021 Fixed 3.65 % 228,000 228,000 Total notes and mortgages payable 3.72 % 3,599,800 3,583,100 Less: deferred financing costs (32,883 ) (41,800 ) Total notes and mortgages payable, net $ 3,566,917 $ 3,541,300 $1.0 Billion Revolving Credit Facility Jan-2022 L + 115 bps n/a $ - $ - (1) Represents loans with variable interest rates that have been fixed by interest rate swaps. See Note 10, Derivative Instruments and Hedging Activities (2) Represents amounts borrowed to fund leasing costs at the property. The loan balance can be increased by an additional $200,000 upon the satisfaction of certain performance hurdles related to the property. (3) Our ownership interest in One Market Plaza and 50 Beale Street is 49.0% and 31.1%, respectively. The following table summarizes our principal repayments required for the next five years and thereafter Notes and Revolving (Amounts in thousands) Total Mortgages Payable Credit Facility 2019 $ 1,052 $ 1,052 $ - 2020 4,304 4,304 - 2021 1,072,644 1,072,644 - 2022 1,046,800 1,046,800 - 2023 - - - Thereafter 1,475,000 1,475,000 -

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	10. Derivative Instruments and Hedging Activities Interest Rate Swaps – Designated as Cash Flow Hedges We have interest rate swaps with an aggregate notional amount of $1.0 billion that are designated as cash flow hedges. We also have entered into forward starting interest rate swaps with an aggregate notional amount of $400,000,000 to extend the maturity of certain swaps for an additional year. Changes in the fair value of interest rate swaps that are designated as cash flow hedges are recognized in “other comprehensive income (loss)” (outside of earnings). We recognized other comprehensive income of $7,273,000, $10,618,000, and $8,161,000 for the years ended December 31, 2018, 2017 and 2016, respectively, from the changes in fair value of these interest rate swaps. See Note 12, Accumulated Other Comprehensive Income (Loss) The following table summarizes the fair value of our interest rate swaps that are designated as cash flow hedges. Fair Value as of December 31, 2018 2017 Interest rate swap assets designated as cash flow hedges (included in “other assets”) $ 16,859 $ 9,855 Interest rate swap liabilities designated as cash flow hedges (included in “other liabilities”) $ 48 $ 317 We have agreements with various derivative counterparties that contain provisions wherein a default on our indebtedness could be deemed a default on our derivative obligations, which would require us to either post collateral up to the fair value of our derivative obligations or settle the obligations for cash. As of December 31, 2018, we did not have such obligations relating to our swaps. Interest Rate Swaps – Non-designated Hedges As of December 31, 2018 and 2017, we did not have interest rate swaps that were not designated as hedges. Prior to December 31, 2017, we had interest rate swaps on One Market Plaza, 900 Third Avenue and 31 West 52nd Street that were not designated as a hedges. We recognized unrealized gains of $1,802,000 and $39,814,000 for the years ended December 31, 2017 and 2016, respectively, in connection with these interest rate swaps, which are included as “unrealized gain on interest rate swaps” on our consolidated statements of income.

Equity

Equity	12 Months Ended
	Dec. 31, 2018
Stockholders Equity Note [Abstract]
Equity	11. Equity Stock Repurchase Program On August 1, 2017, we received authorization from our Board of Directors to repurchase up to $200,000,000 of our common stock from time to time, in the open market or in privately negotiated transactions. As of December 31, 2018, we have repurchased an aggregate of 7,555,601 shares, or $105,383,000 of our common stock, at a weighted average price of $13.95 per share. We currently have $94,617,000 available for future repurchases. The amount and timing of future repurchases, if any, will depend on a number of factors, including, the price and availability of our shares, trading volume and general market conditions. The stock repurchase program may be suspended or discontinued at any time.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	12. Accumulated Other Comprehensive Income (Loss) The following table sets forth changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2018, 2017 and 2016, including amounts attributable to noncontrolling interests in the Operating Partnership. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Amount of income (loss) related to the effective portion of cash flow hedges recognized in other comprehensive income (loss) $ 9,203 $ 3,360 $ (5,150 ) Amounts reclassified from accumulated other comprehensive income (decreasing) increasing interest and debt expense (1,930 ) 7,258 13,311 Amount of (loss) income related to unconsolidated joint ventures recognized in other comprehensive income (loss) (1) (129 ) 160 17 (1) Represents foreign currency translation adjustments. No amounts were reclassified from accumulated other comprehensive income (loss) during any of the periods set forth above.

Noncontrolling Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interest [Abstract]
Noncontrolling Interests	1 3 . Noncontrolling Interests Consolidated Joint Ventures Noncontrolling interests in consolidated joint ventures consist of equity interests held by third parties in One Market Plaza, 50 Beale Street and PGRESS Equity Holdings L.P. As of December 31, 2018 and 2017, noncontrolling interests in our consolidated joint ventures aggregated $394,995,000 and $404,997,000, respectively. Consolidated Real Estate Fund Noncontrolling interests in our consolidated real estate fund consists of equity interests held by third parties in RDF. As of December 31, 2018 and 2017, the noncontrolling interest in our consolidated real estate fund aggregated $66,887,000 and $14,549,000, respectively. Operating Partnership Noncontrolling interests in the Operating Partnership represent common units of the Operating Partnership that are held by third parties, including management, and units issued to management under equity incentive plans. Common units of the Operating Partnership may be tendered for redemption to the Operating Partnership for cash. We, at our option, may assume that obligation and pay the holder either cash or common shares on a one-for-one basis. Since the number of common shares outstanding is equal to the number of common units owned by us, the redemption value of each common unit is equal to the market value of each common share and distributions paid to each common unitholder is equivalent to dividends paid to common stockholders. As of December 31, 2018 and 2017, noncontrolling interests in the Operating Partnership on our consolidated balance sheets had a carrying amount of $428,982,000 and $425,797,000, respectively, and a redemption value of $315,595,000 and $390,231,000, respectively.

Variable Interest Entities (_VI

Variable Interest Entities (“VIEs”)	12 Months Ended
	Dec. 31, 2018
Variable Interest Entities [Abstract]
Variable Interest Entities (“VIEs”)	1 4. Variable Interest Entities (“VIEs”) In the normal course of business, we are the general partner of various types of investment vehicles, which may be considered VIEs. We may, from time to time, own equity or debt securities through vehicles, each of which are considered variable interests. Our involvement in financing the operations of the VIEs is generally limited to our investments in the entity. We consolidate these entities when we are deemed to be the primary beneficiary. Consolidated VIEs We are the sole general partner of, and owned approximately 90.3% of, the Operating Partnership as of December 31, 2018. The Operating Partnership is considered a VIE and is consolidated in our consolidated financial statements. Since we conduct our business through and substantially all of our interests are held by the Operating Partnership, the assets and liabilities on our consolidated financial statements represent the assets and liabilities of the Operating Partnership. As of December 31, 2018 and 2017, the Operating Partnership held interests in consolidated VIEs owning properties, a real estate fund and preferred equity investments that were determined to be VIEs. The assets of these consolidated VIEs may only be used to settle the obligations of the entities and such obligations are secured only by the assets of the entities and are non-recourse to the Operating Partnership or us. The following table summarizes the assets and liabilities of consolidated VIEs of the Operating Partnership. As of December 31, (Amounts in thousands) 2018 2017 Real estate, net $ 1,699,618 $ 1,726,800 Cash and restricted cash 63,450 55,658 Investments in unconsolidated joint ventures 52,923 16,031 Preferred equity investments, net 36,042 35,817 Accounts and other receivables, net 2,107 2,550 Deferred rent receivable 51,926 44,000 Deferred charges, net 14,160 8,123 Intangible assets, net 45,818 66,112 Other assets 16,635 929 Total VIE assets $ 1,982,679 $ 1,956,020 Notes and mortgages payable, net $ 1,197,644 $ 1,196,607 Accounts payable and accrued expenses 24,183 21,211 Intangible liabilities, net 31,582 46,365 Other liabilities 5 155 Total VIE liabilities $ 1,253,414 $ 1,264,338 Unconsolidated VIEs As of December 31, 2018, the Operating Partnership held variable interests in entities that own our unconsolidated real estate funds that were deemed to be VIEs. The following table summarizes our investments in these unconsolidated real estate funds and the maximum risk of loss from these investments. As of December 31, (Amounts in thousands) 2018 2017 Investments $ 10,352 $ 7,253 Asset management fees and other receivables 722 597 Maximum risk of loss $ 11,074 $ 7,850

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	1 5 . Fair Value Measurements Financial Assets and Liabilities Measured at Fair Value Financial assets and liabilities that are measured at fair value on our consolidated balance sheets consist of marketable securities and interest rate swaps. The following table aggregates the fair values of these financial assets and liabilities as of the dates set forth below, based on their levels in the fair value hierarchy. As of December 31, 2018 (Amounts in thousands) Total Level 1 Level 2 Level 3 Marketable securities $ 22,660 $ 22,660 $ - $ - Interest rate swap assets (included in “other assets”) 16,859 - 16,859 - Total assets $ 39,519 $ 22,660 $ 16,859 $ - Interest rate swap liabilities (included in “other liabilities”) $ 48 $ - $ 48 $ - Total liabilities $ 48 $ - $ 48 $ - As of December 31, 2017 (Amounts in thousands) Total Level 1 Level 2 Level 3 Marketable securities $ 29,039 $ 29,039 $ - $ - Interest rate swap assets (included in “other assets”) 9,855 - 9,855 - Total assets $ 38,894 $ 29,039 $ 9,855 $ - Interest rate swap liabilities (included in “other liabilities”) $ 317 $ - $ 317 $ - Total liabilities $ 317 $ - $ 317 $ - Financial Assets and Liabilities Not Measured at Fair Value Financial assets and liabilities not measured at fair value on our consolidated balance sheets consists of preferred equity investments, notes and mortgages payable and the revolving credit facility. The following table summarizes the carrying amounts and fair value of these financial instruments as of the dates set forth below. As of December 31, 2018 As of December 31, 2017 (Amounts in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Preferred equity investments $ 36,042 $ 36,339 $ 35,817 $ 36,112 Total assets $ 36,042 $ 36,339 $ 35,817 $ 36,112 Notes and mortgages payable $ 3,599,800 $ 3,617,961 $ 3,583,100 $ 3,596,953 Revolving credit facility - - - - Total liabilities $ 3,599,800 $ 3,617,961 $ 3,583,100 $ 3,596,953

Revenues

Revenues	12 Months Ended
	Dec. 31, 2018
Revenues [Abstract]
Revenues	1 6 . Revenues Our revenues consist primarily of rental income, tenant reimbursement income and fee and other income. The following table sets forth the details of our revenues. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Rental income $ 667,360 $ 628,883 $ 590,161 Tenant reimbursement income 56,950 52,418 44,943 Fee and other income: Fee income: Property management 6,163 6,336 5,948 Asset management 7,912 8,581 7,754 Acquisition, disposition and leasing 3,160 7,770 2,026 Other 1,394 1,525 1,203 Total fee income 18,629 24,212 16,931 Lease termination income 2,985 2,189 17,010 (1) Other income (2) 13,037 11,265 14,296 Total fee and other income 34,651 37,666 48,237 Total revenues $ 758,961 $ 718,967 $ 683,341 (1) Includes $10,861 from the termination of a lease with a tenant at 1633 Broadway. (2) Primarily comprised of (i) tenant requested services, including overtime heating and cooling and (ii) parking income. Property-related Revenues Property-related revenue is recognized in accordance with ASC Topic 840, Leases The following table is a schedule of future minimum cash rents under non-cancelable operating leases as of December 31, 2018, for each of the five succeeding years commencing January 1, 2019. (Amounts in thousands) 2019 $ 611,301 2020 606,339 2021 553,330 2022 519,559 2023 473,206 Thereafter 2,790,256 Total $ 5,553,991 Revenue from Contracts with Customers Revenue from contracts with customers, which is primarily comprised of (i) property management fees, (ii) asset management fees, (iii) fees relating to acquisitions, dispositions and leasing services and (iv) other fee income, is recognized in accordance with ASC Topic 606, Revenue From Contracts With Customers Fee income is recognized as and when we satisfy our performance obligations pursuant to contractual agreements. Property management and asset management services are provided continuously over time and revenue is recognized over that time. Fee income relating to acquisitions, dispositions and leasing services is recognized upon completion of the acquisition, disposition or leasing services as required in the contractual agreements. The amount of fee income to be recognized is stated in the contract as a fixed price or as a stated percentage of revenues, contributed capital or transaction price. Fee income is reported in a non-operating segment, and therefore is shown as a reconciling item to net income in Note 25, Segments The following table sets forth the amounts receivable from our customers under our various fee agreements and are included as a component of “accounts and other receivables” on our consolidated balance sheets. Acquisition, Property Asset Disposition (Amounts in thousands) Total Management Management and Leasing Other Accounts and other receivables: Balance as of December 31, 2017 $ 1,558 $ 290 $ 762 $ 490 $ 16 Balance as of December 31, 2018 2,075 567 954 490 64 Increase $ 517 $ 277 $ 192 $ - $ 48 As of December 31, 2018 and 2017, our consolidated balance sheets included $400,000 and $387,000, respectively, of deferred revenue in connection with prepayments for services we have not yet provided. These amounts are included as a components of “accounts payable and accrued expenses” on our consolidated balance sheets and will be recognized as income upon completion of the required services. There are no other contract assets or liabilities as of December 31, 2018 and 2017, respectively.

Real Estate Impairment Loss

Real Estate Impairment Loss	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Real Estate Impairment Loss	1 7 . Real Estate Impairment Loss On June 30, 2018, we wrote down the value of certain real estate assets in our Washington, D.C. portfolio. Our estimates of fair value were determined using discounted cash flow models, which considered, among other things, anticipated holding periods, current market conditions and utilized unobservable quantitative inputs, including appropriate capitalization and discount rates. Accordingly, we recorded a $46,000,000 impairment loss based on the excess of the carrying value over the estimated fair value, which is included as “real estate impairment loss” on our consolidated statement of income for the year ended December 31, 2018.

Interest and Other Income (Loss

Interest and Other Income (Loss), net	12 Months Ended
	Dec. 31, 2018
Interest And Other Income [Abstract]
Interest and Other Income (Loss), net	1 8 . Interest and Other Income (Loss), net The following table sets forth the details of interest and other income (loss), net. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Preferred equity investment income (1) $ 3,655 $ 4,187 $ 5,716 Interest and other income 5,384 1,256 774 Mark-to-market of investments in our deferred compensation plans (2) (922 ) 5,114 444 Valuation allowance on preferred equity investment (3) - (19,588 ) - Total interest and other income (loss), net $ 8,117 $ (9,031 ) $ 6,934 (1) Represents income from our preferred equity investments in PGRESS Equity Holdings L.P., of which our 24.4% share is $890, $1,029 and $1,393 for the years ended December 31, 2018, 2017 and 2016, respectively. See Note 7, Preferred Equity Investments (2) The change resulting from the mark-to-market of the deferred compensation plan assets is entirely offset by the change in deferred compensation plan liabilities, which is included as a component of “general and administrative” expenses on our consolidated statements of income. (3) Represents the valuation allowance on 2 Herald Square, our preferred equity investment in PGRESS Equity Holdings L.P., of which our 24.4% share was $4,780, and $14,808 was attributable to noncontrolling interests. In May 2018, the senior lender foreclosed out our interest and accordingly, we wrote off our preferred equity investment.

Interest and Debt Expense

Interest and Debt Expense	12 Months Ended
	Dec. 31, 2018
Interest And Debt Expense [Abstract]
Interest and Debt Expense	19 . Interest and Debt Expense The following table sets forth the details of interest and debt expense. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Interest and debt expense $ 136,630 $ 132,574 $ 146,334 Amortization of deferred financing costs 11,023 11,188 6,804 Total interest and debt expense $ 147,653 $ 143,762 $ 153,138

Incentive Compensation

Incentive Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Incentive Compensation	2 0 . Incentive Compensation Stock-Based Compensation Our 2014 Equity Incentive Plan (the “Plan”), provides for grants of equity incentive awards to our executive officers, non-employee directors, eligible employees and other key persons in order to attract, motivate and retain the talent for which we compete. Under the Plan, awards may be granted up to a maximum of 17,142,857 shares, if all awards granted are “full value awards,” as defined, and up to 34,285,714 shares, if all of the awards granted are “not full value awards,” as defined. “Full value awards” are awards such as restricted stock or long-term incentive plan LTIP units of our Operating Partnership (“LTIP units”) that do not require the payment of an exercise price. “Not full value awards” are awards such as stock options or stock appreciation rights that require the payment of an exercise price. As of December 31, 2018, we have 9,643,663 shares available for future grants under the Plan, if all awards granted are full value awards, as defined in the Plan. The following table summarizes the components of stock-based compensation expense for the years ended December 31, 2018, 2017 and 2016. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 LTIP units $ 9,059 $ 6,572 $ 5,617 Performance-based units 7,645 6,421 3,680 Restricted stock 988 715 391 Stock options 1,954 2,214 1,590 Total stock-based compensation expense $ 19,646 $ 15,922 $ 11,278 LTIP Units We grant our executive officers, non-employee directors and other employees LTIP units which vest over a period of three to five years and are subject to a taxable book-up event, as defined. The LTIP units granted in the years ended December 31, 2018, 2017 and 2016 had grant date fair values of $10,145,000, $7,467,000 and $10,106,000, respectively, which are being amortized into expense on a straight-line basis over the vesting period. As of December 31, 2018, there was $12,387,000 of total unrecognized compensation cost related to unvested LTIP units, which is expected to be recognized over a weighted-average period of 2.0 years. The following table summarizes our LTIP unit activity for the year ended December 31, 2018. Units Weighted-Average Grant-Date Value (per unit) Unvested as of December 31, 2017 1,090,764 $ 15.70 Granted 754,069 13.45 Vested (516,318 ) 15.66 Cancelled or expired (44,432 ) 15.40 Unvested as of December 31, 2018 1,284,083 $ 14.41 Performance-Based Award Programs (“Performance Programs”) We grant our executive officers and other employees LTIP units under multi-year performance-based long-term equity compensation programs. The purpose of these Performance Programs is to further align the interests of our stockholders with that of management by encouraging our senior officers to create stockholder value in a “pay for performance” structure. Under the Performance Programs, participants may earn LTIP units based on our Total Shareholder Return (“TSR”) over a three-year performance measurement period on both an absolute basis and relative basis. If the designated performance objectives are achieved, awards earned under the Performance Programs are subject to vesting over a period of four years and are also subject to a taxable book-up event, as defined. The LTIPs unit activity granted under the Performance Programs in the years ended December 31, 2018, 2017 and 2016 had grant date fair values of $7,009,000, $10,520,000 and $10,914,000, respectively, and are being amortized into expense over the four-year vesting period using a graded vesting attribution method. As of December 31, 2018, there was $10,537,000 of total unrecognized compensation cost related to unvested LTIP units granted under the Performance Programs, which is expected to be recognized over a weighted average period of 2.3 years. The following table summarizes our LTIP unit activity granted under the Performance Programs for the year ended December 31, 2018. Units Weighted-Average Grant-Date Value (per unit) Unvested as of December 31, 2017 3,253,991 $ 8.72 Granted 1,382,807 5.07 Cancelled or expired (1,263,228 ) 8.59 Unvested as of December 31, 2018 3,373,570 $ 7.27 2017 Performance-Based Awards Program (“2017 Performance Program”) On February 5, 2018, the Compensation Committee of our Board of Directors (the “Compensation Committee”) approved the 2017 Performance Program. Under the 2017 Performance Program, participants may earn awards in the form of LTIP units based on our TSR over a three-year performance measurement period beginning on January 1, 2018 and continuing through December 31, 2020, on both an absolute basis and relative basis. Awards granted to our Chief Executive Officer, under the 2017 Performance Program include an additional performance feature requiring threshold TSR performance on both an absolute and a relative basis in order for any awards to be earned. If the designated performance objectives are achieved, awards earned under the 2017 Performance Program are subject to vesting based on continued employment with us through December 31, 2021, with 50.0% of each award vesting upon the conclusion of the performance measurement period, and the remaining 50.0% vesting on December 31, 2021. Furthermore, our Named Executive Officers are required to hold earned awards for an additional year following vesting. The fair value of the awards granted under the 2017 Performance Program on the date of the grant was $7,009,000 and is being amortized into expense over the four-year vesting period using a graded vesting attribution method. 2015 Performance-Based Awards Program (“2015 Performance Program”) On April 3, 2018, the Compensation Committee determined that the performance goals set forth in the 2015 Performance Program were not satisfied during the performance measurement period, which ended on March 31, 2018. Accordingly, all of the 779,055 LTIP units that were granted on April 1, 2015, were forfeited, with no awards being earned. As of April 3, 2018, we had $947,000 of total unrecognized compensation cost related to these awards, which is being recognized over a weighted-average period of 1.6 years. Restricted Stock We grant shares of restricted stock to a non-employee director and certain other employees which vest over four years. The shares of restricted stock granted in the years ended December 31, 2018, 2017 and 2016 had grant date fair values of $1,335,000, $1,309,000 and $1,600,000, respectively, which are being amortized into expense on a straight-line basis over the vesting period. As of December 31, 2018, there was $1,918,000 of total unrecognized compensation cost related to restricted stock, which is expected to be recognized over a weighted-average period of 2.3 years. The table below summarizes our restricted stock activity for the year ended December 31, 2018. Shares Weighted-Average Grant-Date Value (per share) Unvested as of December 31, 2017 129,005 $ 16.33 Granted 93,961 14.21 Vested (42,325 ) 16.18 Cancelled or expired (17,660 ) 15.24 Unvested as of December 31, 2018 162,981 $ 15.26 Stock Options We did not grant any stock options in year ended December 31, 2018. Stock options granted in prior years to certain of our executive officers and other employees vest over periods ranging from three to five years and expire 10 years from the date of grant. The stock options granted in the years ended December 31, 2017 and 2016 had grant date fair values of $4.02 and $3.40 per stock option, respectively, which are being amortized into expense on a straight-line basis over the vesting period. The fair value of the option is estimated using an option-pricing model with the following weighted-average assumptions for grants in the years ended December 31, 2017 and 2016. For the Year Ended December 31, 2017 2016 Expected volatility 29.0% 29.0% Expected life 5.9 years 5.9 years Risk free interest rate 2.2% 1.5% Expected dividend yield 2.3% 2.3% As of December 31, 2018, there was $1,370,000 of total unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of 1.0 years. The following table summarizes our stock option activity for year ended December 31, 2018. Shares Weighted-Average Exercise Weighted-Average Remaining Contractual Term (in years) Aggregate Intrinsic Value Outstanding as of December 31, 2017 2,448,743 $ 17.20 Granted - - Exercised - - Cancelled or expired (316,800 ) 18.00 Outstanding as of December 31, 2018 2,131,943 $ 17.08 6.7 $ - Options vested and expected to vest as of December 31, 2018 2,083,994 $ 17.14 6.5 $ - Options exercisable as of December 31, 2018 1,496,664 $ 17.20 6.2 $ -

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	2 1 . Earnings Per Share The following table summarizes our net income (loss) and the number of common shares used in the computation of basic and diluted income (loss) per common share, which includes the weighted average number of common shares outstanding and the effect of dilutive potential common shares, if any. For the Year Ended December 31, (Amounts in thousands, except per share amounts) 2018 2017 2016 Numerator: Net income (loss) attributable to common stockholders $ 9,147 $ 86,381 $ (9,934 ) Earnings allocated to unvested participating securities (79 ) (98 ) (37 ) Numerator for income (loss) per common share - basic and diluted $ 9,068 $ 86,283 $ (9,971 ) Denominator: Denominator for basic income (loss) per common share - weighted average shares 239,527 236,373 218,053 Effect of dilutive employee stock options and restricted share awards (1) 29 29 - Denominator for diluted income (loss) per common share - weighted average shares 239,556 236,402 218,053 Income (loss) per common share - basic and diluted $ 0.04 $ 0.37 $ (0.05 ) (1) The effect of dilutive securities for the years ended December 31, 2018, 2017, and 2016 excludes 27,510, 30,848 and 48,113

Summary of Quarterly Results (u

Summary of Quarterly Results (unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Results (unaudited)	2 2 . Summary of Quarterly Results (unaudited) The following table summarizes our quarterly results of operations for the years ended December 31, 2018 and 2017. Net income (loss) attributable to the Income (Loss) Per Common Share (Amounts in thousands, except per share amounts) Revenues common stockholders Basic Diluted 2018: December 31 $ 190,675 $ 5,318 $ 0.02 $ 0.02 September 30 192,596 37,531 0.16 0.16 June 30 191,419 (34,816 ) (0.14 ) (0.14 ) March 31 184,271 1,114 0.00 0.00 2017: December 31 $ 180,257 $ (6,793 ) $ (0.03 ) $ (0.03 ) September 30 179,770 (10,214 ) (0.04 ) (0.04 ) June 30 177,704 103,016 0.44 0.44 March 31 181,236 372 0.00 0.00

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Parties	2 3 . Related Parties Due to Affiliates On November 13, 2018, we repaid the $27,299,000 of loans that were due to affiliates. These loans were comprised of a $24,500,000 note payable to CNBB-RDF Holdings, LP, which is an entity partially owned by Katharina Otto-Bernstein (a member of our Board of Directors), and a $2,799,000 note payable to a different entity owned by members of the Otto Family, both of which were made in lieu of certain cash distributions prior to the completion of our initial public offering. The notes bore interest at a fixed rate of 1.40%. For the years ended December 31, 2018, 2017 and 2016, we recognized $334,000, $197,000 and $139,000 of interest expense, respectively, in connection with these notes, which is included as a component of “interest and debt expense” on our consolidated statements of income. Management Agreements We provide property management, leasing and other related services to certain properties owned by members of the Otto Family. We recognized fee income of $838,000, $824,000 and $795,000 for the years ended December 31, 2018, 2017 and 2016, respectively, in connection with these agreements, which is included as a component of “fee and other income” on our consolidated statements of income. As of December 31, 2018, we were owed $51,000 under these agreements, which is included as a component of “accounts and other receivables, net” on our consolidated balance sheet. There were no amount owed to us under these agreements as of December 31, 2017. We also provide property management, asset management, leasing and other related services to our unconsolidated joint ventures and real estate funds. We recognized fee income of $15,231,000, $20,263,000 and $9,920,000, respectively, for the years ended December 31, 2018, 2017 and 2016, respectively, in connection with these agreements. As of December 31, 2018 and 2017, amounts owed to us under these agreements aggregated $1,836,000 and $1,627,000, respectively, and are included as a component of “accounts and other receivables, net” on our consolidated balance sheets. Hamburg Trust Consulting GMBH (“HTC”) We have an agreement with HTC, a licensed broker in Germany, to supervise selling efforts for our private equity real estate funds (or investments in feeder vehicles for these funds) to investors in Germany, including distribution of securitized notes of a feeder vehicle for Fund VIII. Pursuant to this agreement, we have agreed to pay HTC for the costs incurred to sell investments in this feeder vehicle, which primarily consist of commissions paid to third party agents, and other incremental costs incurred by HTC as a result of the engagement, plus, in each case, a mark-up of 10%. HTC is 100% owned by Albert Behler, our Chairman, Chief Executive Officer and President. We incurred expense of $240,000, $247,000 and $625,000 for the years ended December 31, 2018, 2017 and 2016, respectively, in connection with these agreements, which is included as a component of “transaction related costs” on our consolidated statements of income. As of December 31, 2018 and 2017, we owed $40,000 and $51,000, respectively, to HTC under this agreement, which are included as a component of “accounts payable and accrued expenses” on our consolidated balance sheets. Mannheim Trust Dr. Martin Bussmann (a member of our Board of Directors) is also a trustee and a director of Mannheim Trust, a subsidiary of which leases office space at 712 Fifth Avenue, our 50.0% owned unconsolidated joint venture. The Mannheim Trust, which is for the benefit of Dr. Bussmann’s children, leases 5,593 square feet, which expires in April 2023. Our share of rental income from this lease was $366,000, $358,000 and $416,000, for the years ended December 31, 2018, 2017 and 2016, respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	24. Commitments and Contingencies Insurance We carry commercial general liability coverage on our properties, with limits of liability customary within the industry. Similarly, we are insured against the risk of direct and indirect physical damage to our properties including coverage for the perils such as floods, earthquakes and windstorms. Our policies also cover the loss of rental income during an estimated reconstruction period. Our policies reflect limits and deductibles customary in the industry and specific to the buildings and portfolio. We also obtain title insurance policies when acquiring new properties. We currently have coverage for losses incurred in connection with both domestic and foreign terrorist-related activities. While we do carry commercial general liability insurance, property insurance and terrorism insurance with respect to our properties, these policies include limits and terms we consider commercially reasonable. In addition, there are certain losses (including, but not limited to, losses arising from known environmental conditions or acts of war) that are not insured, in full or in part, because they are either uninsurable or the cost of insurance makes it, in our belief, economically impractical to maintain such coverage. Should an uninsured loss arise against us, we would be required to use our own funds to resolve the issue, including litigation costs. We believe the policy specifications and insured limits are adequate given the relative risk of loss, the cost of the coverage and industry practice and, in consultation with our insurance advisors, we believe the properties in our portfolio are adequately insured. Other Commitments and Contingencies We are a party to various claims and routine litigation arising in the ordinary course of business. Some of these claims or others to which we may be subject from time to time, including claims arising specifically from the Formation Transactions, in connection with our initial public offering, may result in defense costs, settlements, fines or judgments against us, some of which are not, or cannot be, covered by insurance. Payment of any such costs, settlements, fines or judgments that are not insured could have an adverse impact on our financial position and results of operations. Should any litigation arise in connection with the Formation Transactions, we would contest it vigorously. In addition, certain litigation or the resolution of certain litigation may affect the availability or cost of some of our insurance coverage, which could adversely impact our results of operations and cash flow, expose us to increased risks that would be uninsured, and/or adversely impact our ability to attract officers and directors. The terms of our mortgage debt and certain side letters in place include certain restrictions and covenants which may limit, among other things, certain investments, the incurrence of additional indebtedness and liens and the disposition or other transfer of assets and interests in the borrower and other credit parties, and require compliance with certain debt yield, debt service coverage and loan to value ratios. In addition, our revolving credit facility contains representations, warranties, covenants, other agreements and events of default customary for agreements of this type with comparable companies. As of December 31, 2018, we believe we are in compliance with all of our covenants. 718 Fifth Avenue - Put Right Prior to the Formation Transactions, an affiliate of our predecessor owned a 25.0% interest in 718 Fifth Avenue, a five-story building containing 19,050 square feet of prime retail space that is located on the southwest corner of 56th Street and Fifth Avenue in New York, (based on its 50.0% interest in a joint venture that held a 50.0% tenancy-in-common interest in the property). Prior to the completion of the Formation Transactions, this interest was sold to its partner in the 718 Fifth Avenue joint venture, who is also our joint venture partner in 712 Fifth Avenue, New York, New York. In connection with this sale, we granted our joint venture partner a put right, pursuant to which the 712 Fifth Avenue joint venture would be required to purchase the entire direct or indirect interests then held by our joint venture partner or its affiliates in 718 Fifth Avenue at a purchase price equal to the fair market value of such interests. The put right may be exercised at any time with the actual purchase occurring no earlier than 12 months after written notice is provided. If the put right is exercised and the 712 Fifth Avenue joint venture acquires the 50.0% tenancy-in-common interest in the property by our joint venture partner, we will own a 25.0% interest in 718 Fifth Avenue based on current ownership interests. Transfer Tax Assessments During 2017, the New York City Department of Finance issued Notices of Determination (“Notices”) assessing additional transfer taxes (including interest and penalties) in connection with the transfer of interests in certain properties during our 2014 initial public offering. Prior to February 16, 2018, we believed that the likelihood of a loss related to these assessments was remote. On February 16, 2018, the New York City Tax Appeals Tribunal issued a decision against a publicly traded REIT in a case interpreting the same provisions of the transfer tax statute, on similar but distinguishable facts. As a result, after consultation with legal counsel, we now believe the likelihood of loss is reasonably possible, and while it is not possible to predict the outcome of these Notices, we estimate the range of loss could be between $0 and $39,800,000. Since no amount in this range is a better estimate than any other amount within the range, we have not accrued any liability arising from potential losses relating to these Notices in our consolidated financial statements.

Segments

Segments	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segments	2 5 . Segments Our reportable segments are separated by region based on the three regions in which we conduct our business: New York, Washington, D.C. and San Francisco. Our determination of segments is aligned with our method of internal reporting and the way our Chief Executive Officer, who is also our Chief Operating Decision Maker, makes key operating decisions, evaluates financial results and manages our business. The following tables provide Net Operating Income (“NOI”) for each reportable segment for the periods set forth below. For the Year Ended December 31, 2018 (Amounts in thousands) Total New York Washington, D.C. San Francisco Other Property-related revenues $ 740,332 $ 468,013 $ 51,290 $ 222,071 $ (1,042 ) Property-related operating expenses (274,078 ) (188,008 ) (19,381 ) (60,043 ) (6,646 ) NOI from unconsolidated joint ventures 20,730 20,395 - - 335 NOI (1) $ 486,984 $ 300,400 $ 31,909 $ 162,028 $ (7,353 ) For the Year Ended December 31, 2017 (Amounts in thousands) Total New York Washington, D.C. San Francisco Other Property-related revenues $ 694,755 $ 430,548 $ 72,143 $ 191,677 $ 387 Property-related operating expenses (266,136 ) (180,855 ) (27,342 ) (50,906 ) (7,033 ) NOI from unconsolidated joint ventures 19,643 19,143 - - 500 NOI (1) $ 448,262 $ 268,836 $ 44,801 $ 140,771 $ (6,146 ) For the Year Ended December 31, 2016 (Amounts in thousands) Total New York Washington, D.C. San Francisco Other Property-related revenues $ 666,410 $ 449,794 $ 86,389 $ 127,813 $ 2,414 Property-related operating expenses (250,040 ) (176,445 ) (32,721 ) (30,889 ) (9,985 ) NOI from unconsolidated joint ventures 17,195 16,874 - - 321 NOI (1) $ 433,565 $ 290,223 $ 53,668 $ 96,924 $ (7,250 ) (1) NOI is used to measure the operating performance of our properties. NOI consists of property-related revenue (which includes rental income, tenant reimbursement income, lease termination income and certain other income) less operating expenses (which includes building expenses such as cleaning, security, repairs and maintenance, utilities, property administration and real estate taxes). We use NOI internally as a performance measure and believe it provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. Other real estate companies may use different methodologies for calculating NOI and, accordingly, our presentation of NOI may not be comparable to other real estate companies. The following table provides a reconciliation of NOI to net income attributable to common stockholders for the periods set forth below. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 NOI $ 486,984 $ 448,262 $ 433,565 Add (subtract) adjustments to arrive to net income (loss): Fee income 18,629 24,212 16,931 Depreciation and amortization expense (258,225 ) (266,037 ) (269,450 ) General and administrative expenses (57,563 ) (61,577 ) (53,510 ) Transaction related costs (1,471 ) (2,027 ) (2,404 ) NOI from unconsolidated joint ventures (20,730 ) (19,643 ) (17,195 ) Income from unconsolidated joint ventures 3,468 20,185 7,413 Loss from unconsolidated real estate funds (269 ) (6,143 ) (498 ) Interest and other income (loss), net 8,117 (9,031 ) 6,934 Interest and debt expense (147,653 ) (143,762 ) (153,138 ) Loss on early extinguishment of debt - (7,877 ) (4,608 ) Real estate impairment loss (46,000 ) - - Gain on sale of real estate 36,845 133,989 - Unrealized gain on interest rate swaps - 1,802 39,814 Net income before income taxes 22,132 112,353 3,854 Income tax expense (3,139 ) (5,177 ) (1,785 ) Net income 18,993 107,176 2,069 Less: net (income) loss attributable to noncontrolling interests in: Consolidated joint ventures (8,182 ) 10,365 (15,423 ) Consolidated real estate fund (720 ) (19,797 ) 1,316 Operating Partnership (944 ) (11,363 ) 2,104 Net income (loss) attributable to common stockholders $ 9,147 $ 86,381 $ (9,934 ) The following table provides the total assets for each of our reportable segments as of the dates set forth below. (Amounts in thousands) Total Assets as of: Total New York Washington, D.C. San Francisco Other December 31, 2018 $ 8,755,978 $ 5,583,022 $ 305,980 $ 2,388,094 $ 478,882 December 31, 2017 8,917,661 5,511,061 693,408 2,421,173 292,019 December 31, 2016 8,867,168 5,617,344 1,075,350 1,913,747 260,727

Schedule-II - Valuation and Qua

Schedule-II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2018
Valuation And Qualifying Accounts [Abstract]
Schedule of Valuation and Qualifying Accounts	COLUMN A COLUMN B COLUMN C COLUMN D COLUMN E Additions Balance at Charged Uncollectible Balance Beginning Against accounts at End (Amounts in thousands) of Year Operations Written-off of Year For the Year Ended December 31, 2018 Allowance for doubtful accounts $ 277 $ 324 $ (8 ) $ 593 Allowance for preferred equity investments 19,588 - (19,588 ) - Total valuation allowance $ 19,865 $ 324 $ (19,596 ) $ 593 For the Year Ended December 31, 2017 Allowance for doubtful accounts $ 202 $ 123 $ (48 ) $ 277 Allowance for preferred equity investments - 19,588 - 19,588 Total valuation allowance $ 202 $ 19,711 $ (48 ) $ 19,865 For the Year Ended December 31, 2016 Allowance for doubtful accounts $ 365 $ 315 $ (478 ) $ 202

Schedule III - Real Estate and

Schedule III - Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2018
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Schedule III - Real Estate and Accumulated Depreciation	COLUMN A COLUMN B COLUMN C COLUMN D COLUMN E COLUMN F COLUMN G COLUMN H COLUMN I (Amounts in thousands) Life on which Costs capitalized depreciation subsequent Gross amount at which Accumulated in latest Initial cost to company to acquisition carried at close of period depreciation income Building and Building and Buildings and and Date of Date statement Description Encumbrances Land Improvements Land Improvements Land Improvements Total (1) amortization construction acquired is computed 1633 Broadway $ 1,046,800 $ 502,846 $ 1,398,341 $ - $ 125,286 $ 502,846 $ 1,523,627 $ 2,026,473 $ (168,325 ) 1971 11/2014 5 to 40 Years 1301 Avenue of the Americas 850,000 406,039 1,051,697 - 91,556 406,039 1,143,253 1,549,292 (128,742 ) 1963 11/2014 5 to 40 Years 31 West 52nd Street 500,000 221,318 604,994 - 44,739 221,318 649,733 871,051 (68,588 ) 1987 11/2014 5 to 40 Years 1325 Avenue of the Americas - 174,688 370,553 - 30,395 174,688 400,948 575,636 (45,238 ) 1989 11/2014 5 to 40 Years 900 Third Avenue - 103,741 296,031 - 14,745 103,741 310,776 414,517 (38,314 ) 1983 11/2014 5 to 40 Years Total New York 2,396,800 1,408,632 3,721,616 - 306,721 1,408,632 4,028,337 5,436,969 (449,207 ) Liberty Place - 46,401 96,422 - 12,741 46,401 109,163 155,564 (14,233 ) 1993 11/2014 5 to 40 Years 1899 Pennsylvania Avenue - 52,568 94,874 - 4,207 52,568 99,081 151,649 (12,432 ) 1915 11/2014 5 to 40 Years Total Washington, D.C. - 98,969 191,296 - 16,948 98,969 208,244 307,213 (26,665 ) One Market Plaza 975,000 288,743 988,014 - 70,757 288,743 1,058,771 1,347,514 (125,743 ) 1976 11/2014 5 to 40 Years One Front Street - 127,765 376,919 - 7,731 127,765 384,650 512,415 (24,824 ) 1979 12/2016 5 to 40 Years 50 Beale Street 228,000 141,097 343,819 - 8,052 141,097 351,871 492,968 (16,868 ) 1968 07/2017 5 to 40 Years Total San Francisco 1,203,000 557,605 1,708,752 - 86,540 557,605 1,795,292 2,352,897 (167,435 ) Other - - - - 4,572 - 4,572 4,572 (1,332 ) 11/2014 5 to 40 Years Total $ 3,599,800 $ 2,065,206 $ 5,621,664 $ - $ 414,781 $ 2,065,206 $ 6,036,445 $ 8,101,651 $ (644,639 ) (1) The basis of the Company’s assets for tax purposes is approximately $2.6 billion lower than the amount reported for financial statement purposes. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Real Estate: Beginning balance $ 8,329,475 $ 7,849,093 $ 7,652,117 Acquisitions - 484,916 504,684 Additions during the year: Land - - - Buildings and improvements 146,378 82,862 116,038 Assets held for sale - - (412,315 ) Real estate impairment loss (46,000 ) - - Assets sold and written-off (328,202 ) (87,396 ) (11,431 ) Ending balance $ 8,101,651 $ 8,329,475 $ 7,849,093 Accumulated Depreciation: Beginning balance $ 487,945 $ 318,161 $ 243,089 Additions charged to expense 188,871 182,732 168,847 Accumulated depreciation related to assets held for sale - - (82,344 ) Accumulated depreciation related to assets sold and written-off (32,177 ) (12,948 ) (11,431 ) Ending balance $ 644,639 $ 487,945 $ 318,161

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and with the rules and regulations of the Securities and Exchange Commission (the “SEC”). These consolidated financial statements include the accounts of Paramount and its consolidated subsidiaries, including the Operating Partnership. All significant intercompany balances and transactions have been eliminated in consolidation .
Real Estate	Real Estate Real estate is carried at cost less accumulated depreciation and amortization. Betterments, major renovations and certain costs directly related to the improvement of real estate are capitalized. Maintenance and repair expenses are charged to expense as incurred. Depreciation is recognized on a straight-line basis over estimated useful lives of the assets, which range from 5 to 40 years. Tenant improvements are amortized on a straight-line basis over the lives of the related leases, which approximate the useful lives of the assets. Upon the acquisition of real estate, we assess the fair value of acquired assets (including land, buildings and improvements, identified intangibles, such as acquired above-market leases and acquired in-place leases) and acquired liabilities (such as acquired below-market leases) and allocate the purchase price based on these assessments. We assess fair value based on estimated cash flow projections that utilize appropriate discount and capitalization rates and available market information. Estimates of future cash flows are based on a number of factors including historical operating results, known trends, and market/economic conditions. We record acquired intangible assets (including acquired above-market leases and acquired in-place leases) and acquired intangible liabilities (including below-market leases) at their estimated fair value. We amortize acquired above-market and below-market leases as a decrease or increase to rental income, respectively, over the lives of the respective leases. Amortization of acquired in-place leases is included as a component of “depreciation and amortization”. Our properties, including any related intangible assets, are individually reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Impairment analyses are based on our current plans, intended holding periods and available market information at the time the analyses are prepared. An impairment exists when the carrying amount of an asset exceeds the aggregate projected future cash flows over the anticipated holding period on an undiscounted basis. An impairment loss is measured based on the excess of the property’s carrying amount over its estimated fair value. Estimates of fair value are determined using discounted cash flow models, which consider, among other things, anticipated holding periods, current market conditions and utilize unobservable quantitative inputs, including appropriate capitalization and discount rates. If our estimates of the projected future cash flows, anticipated holding periods, or market conditions change, our evaluation of impairment losses may be different and such differences could be material to our consolidated financial statements. The evaluation of anticipated cash flows is subjective and is based, in part, on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results. Plans to hold properties over longer periods decrease the likelihood of recording impairment losses. Real estate and related intangibles are classified as held for sale when all the necessary criteria are met. The criteria include (i) management, having the authority to approve action, commits to a plan to sell the property in its present condition, (ii) the sale of the property is at a price reasonable in relation to its current fair value and (iii) the sale is probable and expected to be completed within one year. Real estate and the related intangibles held for sale are carried at the lower of carrying amounts or estimated fair value less disposal costs. Depreciation and amortization is not recognized on real estate and related intangibles classified as assets held for sale.
Variable Interest Entities and Investments in Unconsolidated Joint Ventures and Funds	Variable Interest Entities (“VIEs”) and Investments in Unconsolidated Joint Ventures and Funds We consolidate VIEs in which we are considered to be the primary beneficiary. Entities are considered to be the primary beneficiary if they have both of the following characteristics: (i) the power to direct the activities that, when taken together, most significantly impact the VIE’s performance, and (ii) the obligation to absorb losses and right to receive the returns from the VIE that would be significant to the VIE. We consolidate entities that are not VIEs where we have significant decision making control over operations. Our judgment with respect to our level of influence or control of an entity involves the consideration of various factors including the form of our ownership interest, our representation in the entity’s governance, the size of our investment, estimates of future cash flows, our ability to participate in policy making decisions and the rights of the other investors to participate in the decision making process and to replace us as manager and/or liquidate the joint venture, if applicable. We account for investments under the equity method when the requirements for consolidation are not met, and we have significant influence over the operations of the investee. Equity method investments, which consists of investments in unconsolidated joint ventures and funds are initially recorded at cost and subsequently adjusted for our share of net income or loss and cash contributions and distributions each period. To the extent that our cost basis is different than our share of the equity in the equity method investment, the basis difference allocated to depreciable assets is amortized into “income from unconsolidated joint ventures” over the estimated useful life of the related asset. Investments that do not qualify for consolidation or equity method accounting are accounted for under the cost method.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand and short-term highly liquid investments with original maturities of three months or less. The majority of our cash and cash equivalents are held at major commercial banks, which may at times exceed the Federal Deposit Insurance Corporation limit. To date, we have not experienced any losses on our invested cash.
Restricted Cash	Restricted Cash Restricted cash consists primarily of security deposits held on behalf of our tenants, cash escrowed under loan agreements for debt service, real estate taxes, property insurance and capital improvements and cash restricted in connection with our deferred compensation plan.
Preferred Equity Investments	Preferred Equity Investments Preferred equity investments are comprised of investments in certain partnerships that own real estate. We evaluate the collectibility of preferred equity investments when changes in events or circumstances, including delinquencies, loss experience and collateral quality, indicate that it is probable we will be unable to collect all amounts due under the contractual terms. If a preferred equity investment is considered impaired, a valuation allowance is measured and recorded based on the excess of the carrying amount of the investment over the net realizable value of the collateral.
Marketable Securities	Marketable Securities
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of tenants to make required payments under the lease agreements. We also maintain an allowance for deferred rent receivable, as needed. This receivable arises from earnings recognized in excess of amounts currently due under the lease agreements. Management exercises judgment in establishing these allowances and considers payment history and current credit status in developing these estimates.
Deferred Charges	Deferred Charges Deferred charges include deferred leasing costs and deferred financing costs related to our revolving credit facility. Deferred leasing costs consist of fees and direct costs related to successful leasing activities. Such costs are amortized on a straight-line basis over the lives of the related leases and recognized in our consolidated statements of income as a component of “depreciation and amortization”. Deferred financing costs consist of fees and direct costs incurred in obtaining our revolving credit facility. Such costs are amortized over the term of the revolving credit facility and are recognized as a component of “interest and debt expense” on our consolidated statements of income.
Deferred Financing Costs Related to Notes and Mortgages Payable	Deferred Financing Costs Related to Notes and Mortgages Payable Deferred financing costs related to notes and mortgages payable consists of fees and direct costs incurred in obtaining such financing and are recorded as a reduction of our notes and mortgages payable. Such costs are amortized over the terms of the related debt agreements and recognized as a component of “interest and debt expense” on our consolidated statements of income.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities We record all derivatives on our consolidated balance sheets at fair value in accordance with ASC Topic 815, Derivatives and Hedging
Fair Value of Financial Instruments	Fair Value of Financial Instruments Accounting Standard Codification (“ASC”) Topic 820, Fair Value Measurement and Disclosures , defines fair value and establishes a framework for measuring fair value. The objective of fair value is to determine the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). ASC Topic 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: Level 1 – quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities; Level 2 – observable prices that are based on inputs not quoted in active markets, but corroborated by market data; and Level 3 – unobservable inputs that are used when little or no market data is available. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment is necessary to interpret Level 2 and 3 inputs in determining the fair value of our financial and non-financial assets and liabilities. Accordingly, our fair value estimates, which are made at the end of each reporting period, may be different than the amounts that may ultimately be realized upon sale or disposition of these assets or settlement of these liabilities. We use the following methods and assumptions in estimating fair value for financial instruments that are presented at fair value on our consolidated balance sheets: Interest Rate Swaps Interest rate swaps are valued by a third-party specialist using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each swap. This analysis reflects the contractual terms of the interest rate swaps and uses observable market-based inputs, including interest rate curves and implied volatilities. Interest rate swaps are classified as Level 2 in the fair value hierarchy. We use the following methods and assumptions in estimating fair value for financial instruments that are not presented at fair value on our consolidated balance sheets, but are disclosed in the notes to our consolidated financial statements: Preferred Equity Investments Preferred equity investments are valued by a third-party specialist using the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value. We use significant unobservable inputs in determining the discount rate used in the fair value measurement of these investments, including a credit spread and preferred rate of return. Preferred equity investments are classified as Level 3 in the fair value hierarchy. Notes and Mortgages Payable Notes and mortgages payable are valued by a third-party specialist using the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value at the appropriate current risk adjusted interest rate. For floating rate debt, we use forward rates derived from observable market yield curves to project the expected cash payments we would be required to make under the instrument. The notes and mortgages payable are classified as Level 2 in fair value hierarchy. The carrying value of marketable securities is determined using quoted prices in active markets. The carrying values of all other financial instruments on our consolidated balance sheets, including cash and cash equivalents, restricted cash, accounts and other receivable and accounts payable and accrued expenses, approximate their fair values due to the short-term nature of these instruments.
Revenue Recognition	Revenue Recognition Rental Income Rental income includes base rents that each tenant pays in accordance with the terms of its respective lease and is reported on a straight-line basis over the non-cancellable term of the lease, which includes the effects of rent steps and rent abatements under the leases. We commence rental revenue recognition when the tenant takes possession of the leased space or controls the physical use of the leased space and the leased space is substantially ready for its intended use. Differences between rental income recognized and amounts due under the respective lease agreements are recorded as an increase or decrease to “deferred rent receivable” on our consolidated balance sheets. Rental income also includes the amortization of acquired above and below-market leases, net. Tenant Reimbursement Income Tenant reimbursement income includes revenues arising from tenant leases, which provide for the recovery of all or a portion of the operating expenses and real estate taxes of the property. This revenue is earned in the same period as the expenses are incurred. Fee and Other Income Fee income includes (i) property management fees, (ii) asset management fees and (iii) fees related to acquisitions, dispositions and leasing services and (iv) other fee income earned pursuant to contractual agreements. Fee income is recognized as and when we satisfy our performance obligations pursuant to contractual agreements. Property management and asset management services are provided continuously over time and revenue is recognized over that time. Fee income relating to acquisitions, dispositions and leasing services is recognized upon completion of the acquisition, disposition or leasing services as required in the contractual agreements. The amount of fee income to be recognized is stated in the contract as a fixed price or as a stated percentage of revenues, contributed capital or transaction price. Other income includes lease termination income, income from tenant requested services, including overtime heating and cooling and parking income. Lease termination income could result from a lessee terminating a lease prior to the stated terms in their agreements. To the extent a lease term is modified, any incremental fees or increased lease payments received as a result of the modification are recognized over the remaining lease term based on the relevant facts and circumstances.
Gains and Losses on Sale of Real Estate	Gains and Losses on Sale of Real Estate Gains and losses on the sale of real estate are recognized pursuant to ASC Topic 610-20, Gains and Losses from the Derecognition of Nonfinancial Assets
Stock-based Compensation	Stock-based Compensation We account for stock-based compensation in accordance with ASC Topic 718, Compensation – Stock Compensation
Income Taxes	Income Taxes We operate and have been organized in conformity with the requirements for qualification and taxation as a REIT for U.S. federal income tax purposes. So long as we qualify as a REIT, we generally will not be subject to U.S. federal income tax on our net income that we distribute currently to our stockholders. In order to maintain our qualification as a REIT, we are required under the Internal Revenue Code of 1986, as amended, to distribute at least 90% of our taxable income (without regard to the deduction for dividends paid and excluding net capital gains) to our stockholders and meet certain other requirements. If, with respect to any taxable year, we fail to maintain our qualification as a REIT, and we are not entitled to relief under the relevant statutory provisions, we would be subject to income tax at regular corporate tax rates. Even if we qualify as a REIT, we may also be subject to certain state, local and franchise taxes. Under certain circumstances, U.S. federal income tax may be due on our undistributed taxable income. We treat certain consolidated subsidiaries, and may in the future elect to treat newly formed subsidiaries, as taxable REIT subsidiaries (“TRSs”). TRSs may participate in non-real estate related activities and/or perform non-customary services for tenants and are subject to federal and state income tax at regular corporate tax rates. Our TRSs had a combined current income tax expense of approximately $622,000, $5,758,000 and $780,000 for the years ended December 31, 2018, 2017 and 2016, respectively. In addition, our TRSs had a combined deferred income tax expense of $87,000 for the year ended December 31, 2018 and deferred income tax benefits of $922,000 and $479,000 for the years ended December 31, 2017 and 2016, respectively. The following table reconciles net income (loss) attributable to Paramount Group, Inc. to estimated taxable income for the years ended December 31, 2018, 2017 and 2016. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Net income (loss) attributable to Paramount Group, Inc. $ 9,147 $ 86,381 $ (9,934 ) Book to tax differences: Straight-lining of rents and amortization of above and below-market leases, net (48,604 ) (44,083 ) (51,880 ) Depreciation and amortization 92,512 96,991 95,489 Stock-based compensation 17,847 14,441 9,673 Real estate impairment loss 41,788 - - Gain on sale of real estate (14,381 ) (95,182 ) - Write-off of and valuation allowance on preferred equity investment (3,574 ) 4,327 - Earnings of unconsolidated joint ventures, including real estate investments 179 (8,600 ) (3,513 ) Swap breakage costs - (1,487 ) (25,367 ) Unrealized gain on interest rate swaps - (860 ) (4,651 ) Other, net (8,240 ) 1,885 13,295 Estimated taxable income $ 86,674 $ 53,813 $ 23,112 The following table sets forth the characterization of dividend distributions for federal income tax purposes for the years ended December 31, 2018, 2017 and 2016 For the Year Ended December 31, 2018 2017 2016 Amount % Amount % Amount % Ordinary income $ 0.286 (1) 72.4 % $ 0.195 51.3 % $ 0.107 28.2 % Long-term capital gain 0.074 18.7 % 0.034 8.9 % - - Return of capital 0.035 8.9 % 0.151 39.8 % 0.273 71.8 % Total $ 0.395 (2) 100.0 % $ 0.380 (2) 100.0 % $ 0.380 (2) 100.0 % (1) Represents amounts treated as “qualified REIT dividends” for purposes of Internal Revenue Code 199A. (1) The fourth quarter dividend for the years ended December 31, 2018, 2017 and 2016 of $0.100, $0.095 and $0.095 per share, respectively, were paid in January of the subsequent years and are allocable to the subsequent years for federal income tax purposes.
Segments	Segments Our reportable segments are separated by region based on the three regions in which we conduct our business: New York, Washington, D.C. and San Francisco. Our determination of segments is aligned with our method of internal reporting and the way our Chief Executive Officer, who is also our Chief Operating Decision Maker, makes key operating decisions, evaluates financial results and manages our business. See Note 25, Segments .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and the notes thereto. Actual results could differ materially from those estimates.
Reclassification	Reclassification Certain prior year balances have been reclassified to conform to current year presentation.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Not Materially Impacting Our Financial Statements In May 2014, the Financial Accounting Standard’s Board (“FASB”) issued ASU 2014-09, an update to ASC Topic 606, Revenue from Contracts with Customers Revenues In June 2016, the FASB issued ASU 2016-13, an update to ASC Topic 326, Financial Instruments – Credit Losses Leases In May 2017, the FASB issued ASU 2017-09, an update to ASC Topic 718, Compensation – Stock Compensation In August 2018, the FASB issued ASU 2018-13, an update to ASC Topic 820, Fair Value Measurements In October 2018, the FASB issued ASU 2018-16, an update to ASC Topic 815, Derivatives and Hedging. Derivatives and Hedging Recently Issued Accounting Pronouncements Impacting or Potentially Impacting Our Financial Statements In February 2016, the FASB issued ASU 2016-02, an update to ASC Topic 842, Leases While accounting for lessors under ASU 2016-02 is substantially similar to existing lease accounting guidance, lessors are required to separate payments received pursuant to a lease between lease components (rental income) and non-lease components (revenue related to various services we provide). In July 2018, the FASB issued ASU 2018-11, which provided lessors with a practical expedient to not separate lease and non-lease components, if certain criteria are met. We believe we meet such criteria and upon the adoption of ASU 2016-02, we will elect this practical expedient. Furthermore, ASU 2016-02 also updates the definition of initial direct costs for both lessees and lessors to include only incremental costs of a lease that would not have been incurred if the lease had not been obtained. As a result, upon adoption of ASU 2016-02 on January 1, 2019, we will no longer be able to capitalize internal leasing costs and will have to expense them instead. We had capitalized internal leasing costs of $5,653,000, $7,003,000 and $5,027,000 for the years ended December 31, 2018, 2017 and 2016, respectively. In December 2018, the FASB issued ASU 2018-20, an update to ASC Topic 842, Leases In November 2016, the FASB issued ASU 2016-18, an update to ASC Topic 230, Statement of Cash Flows In February 2017, the FASB issued ASU 2017-05, an update to ASC Topic 610, Other Income Investments in Unconsolidated Joint Ventures In October 2018, the FASB issued ASU 2018-17, an update to ASC Topic 810, Consolidations. eporting entities to consider indirect interests held by related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety in determining whether a decision-making fee is a variable interest. ASU 2018-17 is effective for permitted.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Summary of Reconciliation Net Income (Loss) Attributable to Estimated Taxable Income	The following table reconciles net income (loss) attributable to Paramount Group, Inc. to estimated taxable income for the years ended December 31, 2018, 2017 and 2016. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Net income (loss) attributable to Paramount Group, Inc. $ 9,147 $ 86,381 $ (9,934 ) Book to tax differences: Straight-lining of rents and amortization of above and below-market leases, net (48,604 ) (44,083 ) (51,880 ) Depreciation and amortization 92,512 96,991 95,489 Stock-based compensation 17,847 14,441 9,673 Real estate impairment loss 41,788 - - Gain on sale of real estate (14,381 ) (95,182 ) - Write-off of and valuation allowance on preferred equity investment (3,574 ) 4,327 - Earnings of unconsolidated joint ventures, including real estate investments 179 (8,600 ) (3,513 ) Swap breakage costs - (1,487 ) (25,367 ) Unrealized gain on interest rate swaps - (860 ) (4,651 ) Other, net (8,240 ) 1,885 13,295 Estimated taxable income $ 86,674 $ 53,813 $ 23,112
Summary of Characterization of Dividend Distributions for Federal Income Tax Purposes	The following table sets forth the characterization of dividend distributions for federal income tax purposes for the years ended December 31, 2018, 2017 and 2016 For the Year Ended December 31, 2018 2017 2016 Amount % Amount % Amount % Ordinary income $ 0.286 (1) 72.4 % $ 0.195 51.3 % $ 0.107 28.2 % Long-term capital gain 0.074 18.7 % 0.034 8.9 % - - Return of capital 0.035 8.9 % 0.151 39.8 % 0.273 71.8 % Total $ 0.395 (2) 100.0 % $ 0.380 (2) 100.0 % $ 0.380 (2) 100.0 % (1) Represents amounts treated as “qualified REIT dividends” for purposes of Internal Revenue Code 199A. (1) The fourth quarter dividend for the years ended December 31, 2018, 2017 and 2016 of $0.100, $0.095 and $0.095 per share, respectively, were paid in January of the subsequent years and are allocable to the subsequent years for federal income tax purposes.

Investments in Unconsolidated_2

Investments in Unconsolidated Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2018
Equity Method Investments And Joint Ventures [Abstract]
Summary of Investments and Income from Investments In Unconsolidated Joint Ventures	The following tables summarize our investments in unconsolidated joint ventures as of the dates thereof and the income or loss from these investments for the periods set forth below. (Amounts in thousands) Paramount As of December 31, Our Share of Investments: Ownership 2018 2017 712 Fifth Avenue (1) 50.0% $ - $ - 60 Wall Street (2) 5.0% 22,353 25,083 One Steuart Lane ( 2 ) 25.0% ( 3 ) 52,923 ( 4 ) 16,031 Oder-Center, Germany ( 2 ) 9.5% 3,587 3,648 Investments in unconsolidated joint ventures $ 78,863 $ 44,762 (Amounts in thousands) For the Year Ended December 31, Our Share of Net Income (Loss): 2018 2017 2016 712 Fifth Avenue (1) $ 3,901 $ 20,072 $ 7,335 60 Wall Street (2) (518 ) (152 ) - One Steuart Lane ( 2 ) (18 ) 182 - Oder-Center, Germany ( 2 ) 103 83 78 Income from unconsolidated joint ventures $ 3,468 $ 20,185 $ 7,413 (1) As of December 31, 2018, our basis in the partnership that owns 712 Fifth Avenue, was negative $17,611 resulting from distributions made to us in excess of our share of earnings recognized. Accordingly, we no longer recognize our proportionate share of earnings from the venture because we have no further obligation to fund additional capital to the venture. Instead, we only recognize earnings to the extent we receive cash distributions from the venture. (2) As of December 31, 2018, the carrying amount of our investment in 60 Wall Street, One Steuart Lane and Oder Center, Germany is greater than our share of equity in these investments by $2,772, $692, $5,055, respectively, and primarily represents the unamortized portion of our capitalized acquisition costs. Basis differences allocated to depreciable assets are being amortized into “income from unconsolidated joint ventures” over the estimated useful life of the related assets. (3) Represents RDF’s economic interest in the Property. (6) Includes a $7,086 basis adjustment which was recorded upon the adoption of ASU 2017-05 on January 1, 2018.
Summary of Financial Information of Unconsolidated Joint Ventures	The following tables provide the combined summarized financial information of our unconsolidated joint ventures as of the dates and for the periods set forth below. (Amounts in thousands) As of December 31, Balance Sheets: 2018 2017 Real estate, net $ 1,236,989 $ 1,196,116 Intangible assets 97,658 126,422 Other assets 91,552 81,596 Total assets $ 1,426,199 $ 1,404,134 Notes and mortgages payable, net $ 887,882 $ 886,902 Other liabilities 22,310 14,196 Total liabilities 910,192 901,098 Equity 516,007 503,036 Total liabilities and equity $ 1,426,199 $ 1,404,134 (Amounts in thousands) For the Year Ended December 31, Income Statements: 2018 2017 2016 Rental income $ 113,156 $ 113,643 $ 54,420 Tenant reimbursement income 27,178 25,161 4,495 Fee and other income 7,146 1,622 1,882 Total revenues 147,480 140,426 60,797 Operating 53,417 51,390 23,670 Depreciation and amortization 48,452 46,409 12,509 Total expenses 101,869 97,799 36,179 Operating income 45,611 42,627 24,618 Interest and other income 803 381 68 Interest and debt expense (39,406 ) (33,461 ) (12,212 ) Unrealized gain on interest rate swaps - 1,896 4,109 Net income before income taxes 7,008 11,443 16,583 Income tax expense (10 ) (2 ) (10 ) Net income $ 6,998 $ 11,441 $ 16,573

Investments in Unconsolidated_3

Investments in Unconsolidated Real Estate Funds (Tables)	12 Months Ended
	Dec. 31, 2018
Real Estate Investments [Abstract]
Summary of Investment in Unconsolidated Real Estate Funds and Income or Loss from Fund Investments	The following tables summarize our investments in these unconsolidated real estate funds as of the dates thereof and the income or loss recognized for the periods set forth below. As of December 31, (Amounts in thousands) 2018 2017 Our Share of Investments: Property Funds $ 2,340 $ 2,429 Alternative Investment Fund 8,012 4,824 Investments in unconsolidated real estate funds $ 10,352 $ 7,253 For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Our Share of Net Loss: Net investment income (loss) $ 291 $ 236 $ (324 ) Net realized loss - (126 ) - Net unrealized loss (560 ) (663 ) (1,706 ) Carried interest - (5,590 ) 1,532 Loss from unconsolidated real estate funds $ (269 ) $ (6,143 ) $ (498 )
Summarized Financial Information of Investments in Unconsolidated Real Estate Funds, Excluding Fund X	The following tables provide the summarized financial information of our unconsolidated real estate funds, excluding Fund X, as of the dates and for the periods set forth below. (Amounts in thousands) As of December 31, Balance Sheets: 2018 2017 Real estate investments $ 645,013 $ 405,931 Cash and cash equivalents 10,791 5,076 Other assets 10 74 Total assets $ 655,814 $ 411,081 Other liabilities $ 1,483 $ 1,308 Total liabilities 1,483 1,308 Equity 654,331 409,773 Total liabilities and equity $ 655,814 $ 411,081 (Amounts in thousands) For the Year Ended December 31, Income Statements: 2018 2017 2016 Investment income $ 33,814 $ 29,013 $ 20,484 Investment expenses 10,587 7,086 7,466 Net investment income 23,227 21,927 13,018 Net realized losses - (72,134 ) - Previously recorded unrealized losses - 35,682 - Net unrealized (losses) gains (4,656 ) (6,266 ) 14,275 Income (loss) from real estate fund investments $ 18,571 $ (20,791 ) $ 27,293

Preferred Equity Investments (T

Preferred Equity Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule Of Investments [Abstract]
Schedule of Preferred Equity Investments	(Amounts in thousands, except square feet) Paramount Dividend Initial As of December 31, Preferred Equity Investment Ownership Rate Maturity 2018 2017 470 Vanderbilt Avenue (1) 24.4% 10.3% Feb-2019 $ 36,042 $ 35,817 2 Herald Square (2) n/a n/a n/a - 19,588 36,042 55,405 Less: valuation allowance (2) - (19,588 ) Total preferred equity investments, net $ 36,042 $ 35,817 (1) Represents a preferred equity investment in a partnership that owns 470 Vanderbilt Avenue, a 686,000 square foot office building in Brooklyn, New York. The preferred equity has a dividend rate of 10.3%, of which 8.0% was paid in cash through February 2016 and the unpaid portion accreted to the balance of the investment. Subsequent to February 2016, the entire 10.3% dividend is being paid in cash. (2) Represents a preferred equity investment in a partnership that owned 2 Herald Square, a 369,000 square foot office and retail property in Manhattan. In April 2017, the borrower defaulted on the obligation to extend the maturity date or redeem the preferred equity investment and accordingly, we had recorded a valuation allowance of $19,588. In May 2018, the senior lender foreclosed out our interest and accordingly, we wrote off our preferred equity investment and the related valuation allowance.

Intangible Assets and Liabili_2

Intangible Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets and Liabilities	The following table summarizes our intangible assets (acquired above-market leases and acquired in-place leases) and intangible liabilities (acquired below-market leases) and the related amortization as of the dates and for the periods set forth below. As of December 31, (Amounts in thousands) 2018 2017 Intangible assets: Gross amount $ 515,889 $ 553,063 Accumulated amortization (245,444 ) (200,857 ) $ 270,445 $ 352,206 Intangible liabilities: Gross amount $ 185,191 $ 205,101 Accumulated amortization (89,200 ) (75,073 ) $ 95,991 $ 130,028 For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Amortization of above and below-market leases, net (component of “rental income”) $ 16,059 $ 19,523 $ 9,536 Amortization of acquired in-place leases (component of “depreciation and amortization”) $ 58,814 $ 76,016 $ 94,935
Schedule of Estimated Annual Amortization of Acquired Below-Market Leases, Net of Acquired Above-Market Leases and In Place Leases	The following table sets forth annual amortization of acquired above and below-market leases, net and amortization of acquired in-place leases for each of the five succeeding years commencing from January 1, 2019. (Amounts in thousands) For the Year Ending December 31, Above and Below-Market Leases, Net In-Place Leases 2019 $ 11,851 $ 49,378 2020 6,654 38,738 2021 3,361 28,150 2022 892 23,598 2023 4,407 18,917

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Summary of Outstanding Debt	The following table summarizes our outstanding debt. Maturity Fixed/ Interest Rate as of As of December 31, (Amounts in thousands) Date Variable Rate December 31, 2018 2018 2017 Notes and mortgages payable: 1633 Broadway Dec-2022 Fixed (1) 3.54 % $ 1,000,000 $ 1,000,000 Dec-2022 L + 175 bps 4.10 % 46,800 (2) 30,100 (2) 3.56 % 1,046,800 1,030,100 One Market Plaza (3) Feb-2024 Fixed 4.03 % 975,000 975,000 1301 Avenue of the Americas Nov-2021 Fixed 3.05 % 500,000 500,000 Nov-2021 L + 180 bps 4.18 % 350,000 350,000 3.51 % 850,000 850,000 31 West 52nd Street May-2026 Fixed 3.80 % 500,000 500,000 50 Beale Street (3) Oct-2021 Fixed 3.65 % 228,000 228,000 Total notes and mortgages payable 3.72 % 3,599,800 3,583,100 Less: deferred financing costs (32,883 ) (41,800 ) Total notes and mortgages payable, net $ 3,566,917 $ 3,541,300 $1.0 Billion Revolving Credit Facility Jan-2022 L + 115 bps n/a $ - $ - (1) Represents loans with variable interest rates that have been fixed by interest rate swaps. See Note 10, Derivative Instruments and Hedging Activities (2) Represents amounts borrowed to fund leasing costs at the property. The loan balance can be increased by an additional $200,000 upon the satisfaction of certain performance hurdles related to the property. (3) Our ownership interest in One Market Plaza and 50 Beale Street is 49.0% and 31.1%, respectively.
Summary of Principal Repayments Required For Notes and Mortgages Payable and Revolving Credit Facility	The following table summarizes our principal repayments required for the next five years and thereafter Notes and Revolving (Amounts in thousands) Total Mortgages Payable Credit Facility 2019 $ 1,052 $ 1,052 $ - 2020 4,304 4,304 - 2021 1,072,644 1,072,644 - 2022 1,046,800 1,046,800 - 2023 - - - Thereafter 1,475,000 1,475,000 -

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Interest Rate Swaps	The following table summarizes the fair value of our interest rate swaps that are designated as cash flow hedges. Fair Value as of December 31, 2018 2017 Interest rate swap assets designated as cash flow hedges (included in “other assets”) $ 16,859 $ 9,855 Interest rate swap liabilities designated as cash flow hedges (included in “other liabilities”) $ 48 $ 317

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component	The following table sets forth changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2018, 2017 and 2016, including amounts attributable to noncontrolling interests in the Operating Partnership. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Amount of income (loss) related to the effective portion of cash flow hedges recognized in other comprehensive income (loss) $ 9,203 $ 3,360 $ (5,150 ) Amounts reclassified from accumulated other comprehensive income (decreasing) increasing interest and debt expense (1,930 ) 7,258 13,311 Amount of (loss) income related to unconsolidated joint ventures recognized in other comprehensive income (loss) (1) (129 ) 160 17 (1) Represents foreign currency translation adjustments. No amounts were reclassified from accumulated other comprehensive income (loss) during any of the periods set forth above.

Variable Interest Entities (__2

Variable Interest Entities (“VIEs”) (Tables)	12 Months Ended
	Dec. 31, 2018
Consolidated VIEs [Member]
Summary of Assets and Liabilities of Consolidated Variable Interest Entities	The following table summarizes the assets and liabilities of consolidated VIEs of the Operating Partnership As of December 31, (Amounts in thousands) 2018 2017 Real estate, net $ 1,699,618 $ 1,726,800 Cash and restricted cash 63,450 55,658 Investments in unconsolidated joint ventures 52,923 16,031 Preferred equity investments, net 36,042 35,817 Accounts and other receivables, net 2,107 2,550 Deferred rent receivable 51,926 44,000 Deferred charges, net 14,160 8,123 Intangible assets, net 45,818 66,112 Other assets 16,635 929 Total VIE assets $ 1,982,679 $ 1,956,020 Notes and mortgages payable, net $ 1,197,644 $ 1,196,607 Accounts payable and accrued expenses 24,183 21,211 Intangible liabilities, net 31,582 46,365 Other liabilities 5 155 Total VIE liabilities $ 1,253,414 $ 1,264,338
Unconsolidated VIEs [Member]
Summary of Investments in Unconsolidated Real Estate Funds and Maximum Risk of Loss from Investments	The following table summarizes our investments in these unconsolidated real estate funds and the maximum risk of loss from these investments. As of December 31, (Amounts in thousands) 2018 2017 Investments $ 10,352 $ 7,253 Asset management fees and other receivables 722 597 Maximum risk of loss $ 11,074 $ 7,850

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Values of Financial Assets and Liabilities Measured at Fair Value	The following table aggregates the fair values of these financial assets and liabilities as of the dates set forth below, based on their levels in the fair value hierarchy. As of December 31, 2018 (Amounts in thousands) Total Level 1 Level 2 Level 3 Marketable securities $ 22,660 $ 22,660 $ - $ - Interest rate swap assets (included in “other assets”) 16,859 - 16,859 - Total assets $ 39,519 $ 22,660 $ 16,859 $ - Interest rate swap liabilities (included in “other liabilities”) $ 48 $ - $ 48 $ - Total liabilities $ 48 $ - $ 48 $ - As of December 31, 2017 (Amounts in thousands) Total Level 1 Level 2 Level 3 Marketable securities $ 29,039 $ 29,039 $ - $ - Interest rate swap assets (included in “other assets”) 9,855 - 9,855 - Total assets $ 38,894 $ 29,039 $ 9,855 $ - Interest rate swap liabilities (included in “other liabilities”) $ 317 $ - $ 317 $ - Total liabilities $ 317 $ - $ 317 $ -
Summary of Carrying Amounts and Fair Value of Financial Instruments	The following table summarizes the carrying amounts and fair value of these financial instruments as of the dates set forth below. As of December 31, 2018 As of December 31, 2017 (Amounts in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Preferred equity investments $ 36,042 $ 36,339 $ 35,817 $ 36,112 Total assets $ 36,042 $ 36,339 $ 35,817 $ 36,112 Notes and mortgages payable $ 3,599,800 $ 3,617,961 $ 3,583,100 $ 3,596,953 Revolving credit facility - - - - Total liabilities $ 3,599,800 $ 3,617,961 $ 3,583,100 $ 3,596,953

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2018
Disaggregation Of Revenue [Abstract]
Summary of Revenues	The following table sets forth the details of our revenues. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Rental income $ 667,360 $ 628,883 $ 590,161 Tenant reimbursement income 56,950 52,418 44,943 Fee and other income: Fee income: Property management 6,163 6,336 5,948 Asset management 7,912 8,581 7,754 Acquisition, disposition and leasing 3,160 7,770 2,026 Other 1,394 1,525 1,203 Total fee income 18,629 24,212 16,931 Lease termination income 2,985 2,189 17,010 (1) Other income (2) 13,037 11,265 14,296 Total fee and other income 34,651 37,666 48,237 Total revenues $ 758,961 $ 718,967 $ 683,341 (1) Includes $10,861 from the termination of a lease with a tenant at 1633 Broadway. (2) Primarily comprised of (i) tenant requested services, including overtime heating and cooling and (ii) parking income.
Schedule of Future Minimum Cash Rents Under Non-Cancelable Operating Leases	The following table is a schedule of future minimum cash rents under non-cancelable operating leases as of December 31, 2018, for each of the five succeeding years commencing January 1, 2019. (Amounts in thousands) 2019 $ 611,301 2020 606,339 2021 553,330 2022 519,559 2023 473,206 Thereafter 2,790,256 Total $ 5,553,991
Summary of Amount Receivable from Customers under Various Fee Agreement	The following table sets forth the amounts receivable from our customers under our various fee agreements and are included as a component of “accounts and other receivables” on our consolidated balance sheets. Acquisition, Property Asset Disposition (Amounts in thousands) Total Management Management and Leasing Other Accounts and other receivables: Balance as of December 31, 2017 $ 1,558 $ 290 $ 762 $ 490 $ 16 Balance as of December 31, 2018 2,075 567 954 490 64 Increase $ 517 $ 277 $ 192 $ - $ 48

Interest and Other Income (Lo_2

Interest and Other Income (Loss), net (Tables)	12 Months Ended
	Dec. 31, 2018
Interest And Other Income [Abstract]
Schedule Of Interest And Other Income (Loss), net	The following table sets forth the details of interest and other income (loss), net. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Preferred equity investment income (1) $ 3,655 $ 4,187 $ 5,716 Interest and other income 5,384 1,256 774 Mark-to-market of investments in our deferred compensation plans (2) (922 ) 5,114 444 Valuation allowance on preferred equity investment (3) - (19,588 ) - Total interest and other income (loss), net $ 8,117 $ (9,031 ) $ 6,934 (1) Represents income from our preferred equity investments in PGRESS Equity Holdings L.P., of which our 24.4% share is $890, $1,029 and $1,393 for the years ended December 31, 2018, 2017 and 2016, respectively. See Note 7, Preferred Equity Investments (2) The change resulting from the mark-to-market of the deferred compensation plan assets is entirely offset by the change in deferred compensation plan liabilities, which is included as a component of “general and administrative” expenses on our consolidated statements of income. (3) Represents the valuation allowance on 2 Herald Square, our preferred equity investment in PGRESS Equity Holdings L.P., of which our 24.4% share was $4,780, and $14,808 was attributable to noncontrolling interests. In May 2018, the senior lender foreclosed out our interest and accordingly, we wrote off our preferred equity investment.

Interest and Debt Expense (Tabl

Interest and Debt Expense (Tables)	12 Months Ended
	Dec. 31, 2018
Interest And Debt Expense [Abstract]
Details of Interest and Debt Expense	The following table sets forth the details of interest and debt expense. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 Interest and debt expense $ 136,630 $ 132,574 $ 146,334 Amortization of deferred financing costs 11,023 11,188 6,804 Total interest and debt expense $ 147,653 $ 143,762 $ 153,138

Incentive Compensation (Tables)

Incentive Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Summary of Components of Stock-Based Compensation Expense	The following table summarizes the components of stock-based compensation expense for the years ended December 31, 2018, 2017 and 2016. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 LTIP units $ 9,059 $ 6,572 $ 5,617 Performance-based units 7,645 6,421 3,680 Restricted stock 988 715 391 Stock options 1,954 2,214 1,590 Total stock-based compensation expense $ 19,646 $ 15,922 $ 11,278
Summary of Weighted-average assumptions for grants using Option-pricing model	The fair value of the option is estimated using an option-pricing model with the following weighted-average assumptions for grants in the years ended December 31, 2017 and 2016. For the Year Ended December 31, 2017 2016 Expected volatility 29.0% 29.0% Expected life 5.9 years 5.9 years Risk free interest rate 2.2% 1.5% Expected dividend yield 2.3% 2.3%
Performance Programs [Member]
Summary of LTIP Unit and Restricted Stock Activity	The following table summarizes our LTIP unit activity granted under the Performance Programs for the year ended December 31, 2018. Units Weighted-Average Grant-Date Value (per unit) Unvested as of December 31, 2017 3,253,991 $ 8.72 Granted 1,382,807 5.07 Cancelled or expired (1,263,228 ) 8.59 Unvested as of December 31, 2018 3,373,570 $ 7.27
Restricted Stock [Member]
Summary of LTIP Unit and Restricted Stock Activity	The table below summarizes our restricted stock activity for the year ended December 31, 2018. Shares Weighted-Average Grant-Date Value (per share) Unvested as of December 31, 2017 129,005 $ 16.33 Granted 93,961 14.21 Vested (42,325 ) 16.18 Cancelled or expired (17,660 ) 15.24 Unvested as of December 31, 2018 162,981 $ 15.26
Employee Stock Option [Member]
Summary of Stock Option Activity	The following table summarizes our stock option activity for year ended December 31, 2018. Shares Weighted-Average Exercise Weighted-Average Remaining Contractual Term (in years) Aggregate Intrinsic Value Outstanding as of December 31, 2017 2,448,743 $ 17.20 Granted - - Exercised - - Cancelled or expired (316,800 ) 18.00 Outstanding as of December 31, 2018 2,131,943 $ 17.08 6.7 $ - Options vested and expected to vest as of December 31, 2018 2,083,994 $ 17.14 6.5 $ - Options exercisable as of December 31, 2018 1,496,664 $ 17.20 6.2 $ -
LTIP Units [Member]
Summary of LTIP Unit and Restricted Stock Activity	The following table summarizes our LTIP unit activity for the year ended December 31, 2018. Units Weighted-Average Grant-Date Value (per unit) Unvested as of December 31, 2017 1,090,764 $ 15.70 Granted 754,069 13.45 Vested (516,318 ) 15.66 Cancelled or expired (44,432 ) 15.40 Unvested as of December 31, 2018 1,284,083 $ 14.41

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Summary of Computation of Earnings Per Share	The following table summarizes our net income (loss) and the number of common shares used in the computation of basic and diluted income (loss) per common share, which includes the weighted average number of common shares outstanding and the effect of dilutive potential common shares, if any. For the Year Ended December 31, (Amounts in thousands, except per share amounts) 2018 2017 2016 Numerator: Net income (loss) attributable to common stockholders $ 9,147 $ 86,381 $ (9,934 ) Earnings allocated to unvested participating securities (79 ) (98 ) (37 ) Numerator for income (loss) per common share - basic and diluted $ 9,068 $ 86,283 $ (9,971 ) Denominator: Denominator for basic income (loss) per common share - weighted average shares 239,527 236,373 218,053 Effect of dilutive employee stock options and restricted share awards (1) 29 29 - Denominator for diluted income (loss) per common share - weighted average shares 239,556 236,402 218,053 Income (loss) per common share - basic and diluted $ 0.04 $ 0.37 $ (0.05 ) (1) The effect of dilutive securities for the years ended December 31, 2018, 2017, and 2016 excludes 27,510, 30,848 and 48,113

Summary of Quarterly Results _2

Summary of Quarterly Results (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Results of Operations	The following table summarizes our quarterly results of operations for the years ended December 31, 2018 and 2017. Net income (loss) attributable to the Income (Loss) Per Common Share (Amounts in thousands, except per share amounts) Revenues common stockholders Basic Diluted 2018: December 31 $ 190,675 $ 5,318 $ 0.02 $ 0.02 September 30 192,596 37,531 0.16 0.16 June 30 191,419 (34,816 ) (0.14 ) (0.14 ) March 31 184,271 1,114 0.00 0.00 2017: December 31 $ 180,257 $ (6,793 ) $ (0.03 ) $ (0.03 ) September 30 179,770 (10,214 ) (0.04 ) (0.04 ) June 30 177,704 103,016 0.44 0.44 March 31 181,236 372 0.00 0.00

Segments (Tables)

Segments (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of NOI for Each Reportable Segment Information	The following tables provide Net Operating Income (“NOI”) for each reportable segment for the periods set forth below. For the Year Ended December 31, 2018 (Amounts in thousands) Total New York Washington, D.C. San Francisco Other Property-related revenues $ 740,332 $ 468,013 $ 51,290 $ 222,071 $ (1,042 ) Property-related operating expenses (274,078 ) (188,008 ) (19,381 ) (60,043 ) (6,646 ) NOI from unconsolidated joint ventures 20,730 20,395 - - 335 NOI (1) $ 486,984 $ 300,400 $ 31,909 $ 162,028 $ (7,353 ) For the Year Ended December 31, 2017 (Amounts in thousands) Total New York Washington, D.C. San Francisco Other Property-related revenues $ 694,755 $ 430,548 $ 72,143 $ 191,677 $ 387 Property-related operating expenses (266,136 ) (180,855 ) (27,342 ) (50,906 ) (7,033 ) NOI from unconsolidated joint ventures 19,643 19,143 - - 500 NOI (1) $ 448,262 $ 268,836 $ 44,801 $ 140,771 $ (6,146 ) For the Year Ended December 31, 2016 (Amounts in thousands) Total New York Washington, D.C. San Francisco Other Property-related revenues $ 666,410 $ 449,794 $ 86,389 $ 127,813 $ 2,414 Property-related operating expenses (250,040 ) (176,445 ) (32,721 ) (30,889 ) (9,985 ) NOI from unconsolidated joint ventures 17,195 16,874 - - 321 NOI (1) $ 433,565 $ 290,223 $ 53,668 $ 96,924 $ (7,250 ) (1) NOI is used to measure the operating performance of our properties. NOI consists of property-related revenue (which includes rental income, tenant reimbursement income, lease termination income and certain other income) less operating expenses (which includes building expenses such as cleaning, security, repairs and maintenance, utilities, property administration and real estate taxes). We use NOI internally as a performance measure and believe it provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. Other real estate companies may use different methodologies for calculating NOI and, accordingly, our presentation of NOI may not be comparable to other real estate companies.
Schedule of Reconciliation of NOI to Net Income Attributable to Common Stockholders	The following table provides a reconciliation of NOI to net income attributable to common stockholders for the periods set forth below. For the Year Ended December 31, (Amounts in thousands) 2018 2017 2016 NOI $ 486,984 $ 448,262 $ 433,565 Add (subtract) adjustments to arrive to net income (loss): Fee income 18,629 24,212 16,931 Depreciation and amortization expense (258,225 ) (266,037 ) (269,450 ) General and administrative expenses (57,563 ) (61,577 ) (53,510 ) Transaction related costs (1,471 ) (2,027 ) (2,404 ) NOI from unconsolidated joint ventures (20,730 ) (19,643 ) (17,195 ) Income from unconsolidated joint ventures 3,468 20,185 7,413 Loss from unconsolidated real estate funds (269 ) (6,143 ) (498 ) Interest and other income (loss), net 8,117 (9,031 ) 6,934 Interest and debt expense (147,653 ) (143,762 ) (153,138 ) Loss on early extinguishment of debt - (7,877 ) (4,608 ) Real estate impairment loss (46,000 ) - - Gain on sale of real estate 36,845 133,989 - Unrealized gain on interest rate swaps - 1,802 39,814 Net income before income taxes 22,132 112,353 3,854 Income tax expense (3,139 ) (5,177 ) (1,785 ) Net income 18,993 107,176 2,069 Less: net (income) loss attributable to noncontrolling interests in: Consolidated joint ventures (8,182 ) 10,365 (15,423 ) Consolidated real estate fund (720 ) (19,797 ) 1,316 Operating Partnership (944 ) (11,363 ) 2,104 Net income (loss) attributable to common stockholders $ 9,147 $ 86,381 $ (9,934 )
Schedule of Total Assets for Each Reportable Segments Information	The following table provides the total assets for each of our reportable segments as of the dates set forth below. (Amounts in thousands) Total Assets as of: Total New York Washington, D.C. San Francisco Other December 31, 2018 $ 8,755,978 $ 5,583,022 $ 305,980 $ 2,388,094 $ 478,882 December 31, 2017 8,917,661 5,511,061 693,408 2,421,173 292,019 December 31, 2016 8,867,168 5,617,344 1,075,350 1,913,747 260,727

Organization and Business - Add

Organization and Business - Additional Information (Details) ft² in Millions	12 Months Ended
	Dec. 31, 2018ft²Properties
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of office properties | Properties	12
Area of office and retail properties | ft²	11.9
Percentage of ownership in operating partnership	90.30%

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Additional Information (Details)	Jan. 01, 2018USD ($)	Dec. 31, 2018USD ($)Segment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Feb. 29, 2016
Property Plant And Equipment [Line Items]
Minimum percentage of taxable income distributed to shareholders		90.00%
Income tax expense		$ 3,139,000	$ 5,177,000	$ 1,785,000
Number of reportable segments | Segment		3
Capitalized internal leasing costs		$ 5,653,000	7,003,000	5,027,000
Adjustment to investments in unconsolidated joint ventures		7,086,000
ASU 2016-02 [Member]
Property Plant And Equipment [Line Items]
Lease term, in months					12 months
ASU 2016-18 [Member]
Property Plant And Equipment [Line Items]
Increase in cash provided by used in operating activities continuing operations				3,000,000
Increase in cash provided by used in investing activities continuing operations				15,449,000
ASU 2017-05 [Member] | RDF [Member] | 75 Howard [Member]
Property Plant And Equipment [Line Items]
Adjustment to investments in unconsolidated joint ventures	$ 7,086,000
Taxable REIT Subsidiaries [Member]
Property Plant And Equipment [Line Items]
Income tax expense		622,000	5,758,000	780,000
Deferred income tax expense (benefit)		$ 87,000	$ 922,000	$ 479,000
Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives of the assets, years		5
Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives of the assets, years		40

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies - Summary of Reconciliation Net Income (Loss) Attributable to Estimated Taxable Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Net income (loss) attributable to Paramount Group, Inc.	$ 5,318	$ 37,531	$ (34,816)	$ 1,114	$ (6,793)	$ (10,214)	$ 103,016	$ 372	$ 9,147	$ 86,381	$ (9,934)
Book to tax differences:
Straight-lining of rents and amortization of above and below-market leases, net									(48,604)	(44,083)	(51,880)
Depreciation and amortization									92,512	96,991	95,489
Stock-based compensation									17,847	14,441	9,673
Real estate impairment loss									41,788
Gain on sale of real estate									(14,381)	(95,182)
Write-off of and valuation allowance on preferred equity investment									(3,574)	4,327
Earnings of unconsolidated joint ventures, including real estate investments									179	(8,600)	(3,513)
Swap breakage costs										(1,487)	(25,367)
Unrealized gain on interest rate swaps										(860)	(4,651)
Other, net									(8,240)	1,885	13,295
Estimated taxable income									$ 86,674	$ 53,813	$ 23,112

Basis of Presentation and Sig_6

Basis of Presentation and Significant Accounting Policies - Summary of Characterization of Dividend Distributions for Federal Income Tax Purposes (Details) - $ / shares	1 Months Ended		12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Cash dividend	$ 0.095	$ 0.095	$ 0.395	$ 0.380	$ 0.380
Ordinary income			72.40%	51.30%	28.20%
Long-term capital gain			18.70%	8.90%
Return of capital			8.90%	39.80%	71.80%
Total			100.00%	100.00%	100.00%
Ordinary Income [Member]
Income Taxes [Line Items]
Cash dividend			$ 0.286	$ 0.195	$ 0.107
Long-Term Capital Gain [Member]
Income Taxes [Line Items]
Cash dividend			0.074	0.034
Return of Capital [Member]
Income Taxes [Line Items]
Cash dividend			$ 0.035	$ 0.151	$ 0.273

Basis of Presentation and Sig_7

Basis of Presentation and Significant Accounting Policies - Summary of Characterization of Dividend Distributions for Federal Income Tax Purposes (Parenthetical) (Details) - $ / shares	1 Months Ended			12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Cash dividend		$ 0.095	$ 0.095	$ 0.395	$ 0.380	$ 0.380
Subsequent Event [Member]
Income Taxes [Line Items]
Cash dividend	$ 0.100

Dispositions - Additional Infor

Dispositions - Additional Information (Details)	Sep. 27, 2018USD ($)ft²	Aug. 09, 2018USD ($)ft²	May 03, 2017USD ($)ft²	Dec. 31, 2018ft²
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Area of office and retail properties | ft²				11,900,000
2099 Pennsylvania Avenue [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Area of office and retail properties | ft²		208,776
Sale agreement amount		$ 219,900,000
Gain on sale of property		$ 35,836,000
425 Eye Street [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Area of office and retail properties | ft²	372,552
Sale agreement amount	$ 157,000,000
Gain on sale of property	$ 1,009,000
Waterview [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Area of office and retail properties | ft²			636,768
Sale agreement amount			$ 460,000,000
Gain on sale of property			$ 110,583,000

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details)	Feb. 07, 2019USD ($)ft²	Dec. 31, 2018ft²	Jul. 17, 2017USD ($)ft²
Business Acquisition [Line Items]
Area of office and retail properties | ft²		11,900,000
111 Sutter Street [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Area of office and retail properties | ft²	293,000
Business combination, consideration transferred	$ 227,000,000
Percentage of ownership interest in new joint venture	49.00%
Percentage of ownership interest in joint venture held by co-venturer	51.00%
Mortgage financing amount	$ 138,200,000
Term of mortgage financing loan	4 years
Extended term of mortgage financing loan, interest only	3 years
111 Sutter Street [Member] | London Interbank Offered Rate (LIBOR) [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Mortgage financing loan, interest only basis points at LIBOR	2.15%
50 Beale Street [Member]
Business Acquisition [Line Items]
Area of office and retail properties | ft²			660,625
Percentage of ownership interest in new joint venture			36.60%
Percentage of interest acquired			62.20%
Percentage of interest directly acquired in property			13.20%
Percentage of remaining interest acquired in property by new joint venture.			49.00%
Property funds, ownership percentage			31.10%
Property funds, ownership amount			$ 517,500,000
Value of debt assumed with acquisition			$ 228,000,000

Investments in Unconsolidated_4

Investments in Unconsolidated Joint Ventures - Additional Information (Details)	Mar. 14, 2018	Dec. 31, 2018	Mar. 13, 2018
RDF [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in residential fund		7.40%
Percentage of interest third party ownership		92.60%
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage		25.00%
Property funds, ownership percentage		1.85%
One Steuart Lane [Member] | RDF [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage of interest transferred to new joint venture	20.00%
Percentage of interest acquired	10.00%
Indirect interest percentage	15.00%
Property funds, ownership percentage	25.00%
Property funds, ownership percentage		20.00%
Property funds, ownership percentage		5.00%
New Joint Venture [Member] | RDF [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage			20.00%
Percentage of interest owned	75.00%	75.00%
Percentage of interest owned by third party		25.00%

Investments in Unconsolidated_5

Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Equity Method Investments [Line Items]
Investments in unconsolidated joint ventures	$ 78,863	$ 44,762
Income from unconsolidated joint ventures	$ 3,468	20,185	$ 7,413
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	50.00%
Income from unconsolidated joint ventures	$ 3,901	20,072	7,335
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	5.00%
Investments in unconsolidated joint ventures	$ 22,353	25,083
Income from unconsolidated joint ventures	$ (518)	(152)
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	25.00%
Investments in unconsolidated joint ventures	$ 52,923	16,031
Income from unconsolidated joint ventures	$ (18)	182
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	9.50%
Investments in unconsolidated joint ventures	$ 3,587	3,648
Income from unconsolidated joint ventures	$ 103	$ 83	$ 78

Investments in Unconsolidated_6

Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Parenthetical) (Details) - USD ($)	Jan. 01, 2018	Dec. 31, 2018
Schedule Of Equity Method Investments [Line Items]
Adjustment to investments in unconsolidated joint ventures		$ 7,086,000
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions made in excess of share of earnings recognized negative basis		17,611
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity		2,772,000
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity		692,000
One Steuart Lane [Member] | ASU 2017-05 [Member] | RDF [Member]
Schedule Of Equity Method Investments [Line Items]
Adjustment to investments in unconsolidated joint ventures	$ 7,086,000
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity		$ 5,055,000

Investments in Unconsolidated_7

Investments in Unconsolidated Joint Ventures - Summary of Financial Information of Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity Method Investments And Joint Ventures [Abstract]
Real estate, net	$ 1,236,989	$ 1,196,116
Intangible assets	97,658	126,422
Other assets	91,552	81,596
Total assets	1,426,199	1,404,134
Notes and mortgages payable, net	887,882	886,902
Other liabilities	22,310	14,196
Total liabilities	910,192	901,098
Equity	516,007	503,036
Total liabilities and equity	1,426,199	1,404,134
Rental income	113,156	113,643	$ 54,420
Tenant reimbursement income	27,178	25,161	4,495
Fee and other income	7,146	1,622	1,882
Total revenues	147,480	140,426	60,797
Operating	53,417	51,390	23,670
Depreciation and amortization	48,452	46,409	12,509
Total expenses	101,869	97,799	36,179
Operating income	45,611	42,627	24,618
Interest and other income	803	381	68
Interest and debt expense	(39,406)	(33,461)	(12,212)
Unrealized gain on interest rate swaps		1,896	4,109
Net income before income taxes	7,008	11,443	16,583
Income tax expense	(10)	(2)	(10)
Net income	$ 6,998	$ 11,441	$ 16,573

Investments in Unconsolidated_8

Investments in Unconsolidated Real Estate Funds - Additional Information (Details)	Jan. 25, 2019USD ($)	Dec. 31, 2018USD ($)ft²	Apr. 30, 2016USD ($)	Dec. 31, 2018USD ($)ft²	Dec. 31, 2017USD ($)
Investment Holdings [Line Items]
Area of office and retail properties | ft²		11,900,000		11,900,000
Alternative Investment Fund, Interest Rate		1.30%		1.30%
Proceeds from sale of real estate				$ 349,013,000	$ 540,333,000
Capital commitments			$ 775,200,000
Capital commitments invested		$ 614,450,000		614,450,000
Additional amount reserved for funding future draws		$ 74,391,000		$ 74,391,000
Investment maturity date range start				2019-10
Investment maturity date range end				2027-12
Investment period end date				2019-04
Investment Extended Period End Date				2020-04
Minimum [Member]
Investment Holdings [Line Items]
Stated interest rates on invested capital commitments				5.50%
Maximum [Member]
Investment Holdings [Line Items]
Stated interest rates on invested capital commitments				9.61%
Fund VII and VII-H [Member]
Investment Holdings [Line Items]
Alternative Investment Fund, Interest Rate		7.20%		7.20%
Fund VII and VII-H [Member] | Office Building [Member]
Investment Holdings [Line Items]
Area of office and retail properties | ft²		64,532		64,532
Fund VII and VII-H [Member] | Zero Bond Street [Member]
Investment Holdings [Line Items]
Property funds, percentage		100.00%		100.00%
Fund VII and VII-H [Member] | Zero Bond Street [Member] | Subsequent Event [Member]
Investment Holdings [Line Items]
Proceeds from sale of real estate	$ 130,500,000
Fund X [Member]
Investment Holdings [Line Items]
Capital commitments		$ 167,000,000
Capital commitments invested		0		$ 0
Ownership value of contributed capital in capital commitments		$ 10,000,000

Investments in Unconsolidated_9

Investments in Unconsolidated Real Estate Funds - Summary of Investment in Unconsolidated Real Estate Funds and Income or Loss from Fund Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Our Share of Investments:
Investments in unconsolidated real estate funds	$ 10,352	$ 7,253
(Loss) income from unconsolidated real estate funds	(269)	(6,143)	$ (498)
Net realized loss		(126)
Net unrealized loss	(560)	(663)	(1,706)
Net investment income (loss) [Member]
Our Share of Investments:
(Loss) income from unconsolidated real estate funds	291	236	(324)
Carried interest [Member]
Our Share of Investments:
(Loss) income from unconsolidated real estate funds		(5,590)	$ 1,532
Property Funds [Member]
Our Share of Investments:
Investments in unconsolidated real estate funds	2,340	2,429
Alternative Investment Fund [Member]
Our Share of Investments:
Investments in unconsolidated real estate funds	$ 8,012	$ 4,824

Investments in Unconsolidate_10

Investments in Unconsolidated Real Estate Funds - Schedule of Financial Information of Unconsolidated Real Estate Funds, Excluding Fund X (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Other assets	$ 91,552	$ 81,596
Total assets	1,426,199	1,404,134
Other liabilities	22,310	14,196
Total liabilities	910,192	901,098
Equity	516,007	503,036
Total liabilities and equity	1,426,199	1,404,134
Unconsolidated Real Estate Funds [Member]
Investment Holdings [Line Items]
Real estate investments	645,013	405,931
Cash and cash equivalents	10,791	5,076
Other assets	10	74
Total assets	655,814	411,081
Other liabilities	1,483	1,308
Total liabilities	1,483	1,308
Equity	654,331	409,773
Total liabilities and equity	$ 655,814	$ 411,081

Investments in Unconsolidate_11

Investments in Unconsolidated Real Estate Funds - Schedule of Income from Unconsolidated Real Estate Funds Investment, Excluding Fund X (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Net realized losses		$ (126)
Net unrealized (losses) gains	$ (560)	(663)	$ (1,706)
Unconsolidated Real Estate Funds [Member]
Investment Holdings [Line Items]
Investment income	33,814	29,013	20,484
Investment expenses	10,587	7,086	7,466
Net investment income	23,227	21,927	13,018
Net realized losses		(72,134)
Previously recorded unrealized losses		35,682
Net unrealized (losses) gains	(4,656)	(6,266)	14,275
Income (loss) from real estate fund investments	$ 18,571	$ (20,791)	$ 27,293

Preferred Equity Investments -

Preferred Equity Investments - Additional Information (Details)	Dec. 31, 2018
Schedule Of Investments [Abstract]
Preferred equity ownership percentage	24.40%

Preferred Equity Investments _2

Preferred Equity Investments - Schedule of Preferred Equity Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Apr. 30, 2017
Investment Holdings [Line Items]
Preferred equity ownership percentage	24.40%
Preferred equity investments, gross	$ 36,042	$ 55,405
Less: valuation allowance	0	(19,588)
Total preferred equity investments, net	$ 36,042	35,817
470 Vanderbilt Avenue [Member]
Investment Holdings [Line Items]
Preferred equity ownership percentage	24.40%
Preferred Equity Investments, Dividend Rate	10.30%
Preferred Equity Investments, Initial Maturity	2019-02
Preferred equity investments, gross	$ 36,042	35,817
2 Herald Square [Member]
Investment Holdings [Line Items]
Preferred equity investments, gross		$ 19,588
Less: valuation allowance			$ (19,588)

Preferred Equity Investments _3

Preferred Equity Investments - Schedule of Preferred Equity Investments (Parenthetical) (Details) ft² in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)ft²	Dec. 31, 2017USD ($)	Apr. 30, 2017USD ($)
Schedule Of Investments [Line Items]
Area of office properties	11,900
Valuation allowance on preferred equity investment | $	$ 0	$ 19,588
470 Vanderbilt Avenue [Member]
Schedule Of Investments [Line Items]
Area of office properties	686
Preferred Equity Investments, Dividend Rate	10.30%
Preferred equity investments, dividend rate percentage paid	8.00%
2 Herald Square [Member]
Schedule Of Investments [Line Items]
Area of office properties	369
Valuation allowance on preferred equity investment | $			$ 19,588

Intangible Assets and Intangibl

Intangible Assets and Intangible Liabilities - Summary of Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intangible assets:
Gross amount	$ 515,889	$ 553,063
Accumulated amortization	(245,444)	(200,857)
Intangible assets, Net	270,445	352,206
Intangible liabilities:
Gross amount	185,191	205,101
Accumulated amortization	(89,200)	(75,073)
Intangible Liabilities, Net	95,991	130,028
Leases, Acquired-in-Place, Market Adjustment [Member]
Intangible liabilities:
Amortization of above and below-market leases, net (component of “rental income”)	16,059	19,523	$ 9,536
Leases, Acquired-in-Place [Member]
Intangible liabilities:
Amortization of acquired in-place leases (component of “depreciation and amortization”)	$ 58,814	$ 76,016	$ 94,935

Intangible Assets and Intangi_2

Intangible Assets and Intangible Liabilities - Schedule of Estimated Annual Amortization of Acquired Below-Market Leases, Net of Acquired Above-Market Leases and In Place Leases (Details) $ in Thousands	Dec. 31, 2018USD ($)
Finite Lived Intangible Assets [Line Items]
2,019	$ 11,851
2,020	6,654
2,021	3,361
2,022	892
2,023	4,407
Leases, Acquired-in-Place [Member]
Finite Lived Intangible Assets [Line Items]
2,019	49,378
2,020	38,738
2,021	28,150
2,022	23,598
2,023	$ 18,917

Debt - Additional Information (

Debt - Additional Information (Details) - Revolving Credit Facility [Member] - USD ($)	Jan. 10, 2018	Jan. 09, 2018
Debt Instrument [Line Items]
Maturity date of debt	2022-01	2018-11
Borrowing capacity	$ 1,000,000,000	$ 800,000,000
Decrease in facility fees	0.05%
Facility fees percentage	0.20%	0.25%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Decrease in variable rate	0.10%
Debt instrument variable rate	1.15%	1.25%

Debt - Summary of Outstanding D

Debt - Summary of Outstanding Debt (Details) - USD ($) $ in Thousands	Jan. 10, 2018	Jan. 09, 2018	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Notes and mortgages payable, Interest Rate			3.72%
Notes and mortgages payable			$ 3,599,800	$ 3,583,100
Credit Facility			0	0
Less: deferred financing costs			(32,883)	(41,800)
Total notes and mortgages payable, net			$ 3,566,917	3,541,300
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date of debt	2022-01	2018-11
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Fixed/Variable Rate	1.15%	1.25%
Credit Facility With Variable Rate [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date of debt			2022-01
Credit Facility With Variable Rate [Member] | London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Fixed/Variable Rate			1.15%
1633 Broadway [Member]
Debt Instrument [Line Items]
Notes and mortgages payable, Interest Rate			3.56%
Notes and mortgages payable			$ 1,046,800	1,030,100
1633 Broadway [Member] | Mortgages and Notes Payable with Fixed Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2022-12
Notes and mortgages payable, Interest Rate			3.54%
Notes and mortgages payable			$ 1,000,000	1,000,000
1633 Broadway [Member] | Mortgages and Notes Payable with Variable Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2022-12
Notes and mortgages payable, Interest Rate			4.10%
Notes and mortgages payable			$ 46,800	30,100
1633 Broadway [Member] | Mortgages and Notes Payable with Variable Rate [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Fixed/Variable Rate			1.75%
One Market Plaza [Member] | Mortgages and Notes Payable with Fixed Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2024-02
Notes and mortgages payable, Interest Rate			4.03%
Notes and mortgages payable			$ 975,000	975,000
1301 Avenue of Americas [Member]
Debt Instrument [Line Items]
Notes and mortgages payable, Interest Rate			3.51%
Notes and mortgages payable			$ 850,000	850,000
1301 Avenue of Americas [Member] | Mortgages and Notes Payable with Fixed Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2021-11
Notes and mortgages payable, Interest Rate			3.05%
Notes and mortgages payable			$ 500,000	500,000
1301 Avenue of Americas [Member] | Mortgages and Notes Payable with Variable Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2021-11
Notes and mortgages payable, Interest Rate			4.18%
Notes and mortgages payable			$ 350,000	350,000
1301 Avenue of Americas [Member] | Mortgages and Notes Payable with Variable Rate [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Fixed/Variable Rate			1.80%
50 Beale Street [Member] | Mortgages and Notes Payable with Fixed Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2021-10
Notes and mortgages payable, Interest Rate			3.65%
Notes and mortgages payable			$ 228,000	228,000
31 West 52nd Street [Member] | Mortgages and Notes Payable with Fixed Rate [Member]
Debt Instrument [Line Items]
Maturity date of debt			2026-05
Notes and mortgages payable, Interest Rate			3.80%
Notes and mortgages payable			$ 500,000	$ 500,000

Debt - Summary of Outstanding_2

Debt - Summary of Outstanding Debt (Parenthetical) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
1633 Broadway [Member] | Mortgages and Notes Payable with Variable Rate [Member]
Debt Instrument [Line Items]
Additional Borrowing Capacity Subject To Performance Hurdles	$ 200,000,000
One Market Plaza [Member]
Debt Instrument [Line Items]
Ownership interest rate of property	49.00%	49.00%
50 Beale Street [Member]
Debt Instrument [Line Items]
Ownership interest rate of property	31.10%	31.10%

Debt - Summary of Principal Rep

Debt - Summary of Principal Repayments Required For Notes and Mortgages Payable and Revolving Credit Facility (Details) $ in Thousands	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
2,019	$ 1,052
2,020	4,304
2,021	1,072,644
2,022	1,046,800
Thereafter	1,475,000
Notes and Mortgages Payable [Member]
Debt Instrument [Line Items]
2,019	1,052
2,020	4,304
2,021	1,072,644
2,022	1,046,800
Thereafter	$ 1,475,000

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018USD ($)Derivative	Dec. 31, 2017USD ($)Derivative	Dec. 31, 2016USD ($)
Derivative [Line Items]
Change in value of interest rate swaps	$ 9,203,000	$ 3,360,000	$ (5,150,000)
Number of derivative instruments | Derivative	0	0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Change in value of interest rate swaps	$ 7,273,000	$ 10,618,000	8,161,000
Estimated accumulated other comprehensive income (loss) reclassified in interest expense in the next twelve months	7,489,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | 1633 Broadway [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Aggregate notional amount	1,000,000,000
Designated as Hedging Instrument [Member] | Interest Rate Swap March Two Thousand Eighteen [Member] | 1633 Broadway [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Aggregate notional amount	$ 400,000,000
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Unrealized gains on interest rate swaps		$ 1,802,000	$ 39,814,000

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Summary of Fair Value of Interest Rate Swaps (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Interest rate swap assets	$ 16,859	$ 9,855
Interest rate swap liabilities	48	317
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] | Other Assets [Member]
Derivative [Line Items]
Interest rate swap assets	16,859	9,855
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest rate swap liabilities	$ 48	$ 317

Equity - Additional Information

Equity - Additional Information (Details) - USD ($)	Dec. 31, 2018	Aug. 01, 2017
Stockholders Equity Note [Abstract]
Common stock shares authorized amount		$ 200,000,000
Stock repurchased during period, Share	7,555,601
Stock repurchased during period, value	$ 105,383,000
Weighted average price	$ 13.95
Stock repurchase amount available for future repurchase	$ 94,617,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Amount of income (loss) related to the effective portion of cash flow hedges recognized in other comprehensive income (loss)		$ 9,203	$ 3,360	$ (5,150)
Amounts reclassified from accumulated other comprehensive income (decreasing) increasing interest and debt expense		(1,930)	7,258	13,311
Amount of (loss) income related to unconsolidated joint ventures recognized in other comprehensive income (loss)	[1]	$ (129)	$ 160	$ 17
[1]	Represents foreign currency translation adjustments. No amounts were reclassified from accumulated other comprehensive income (loss) during any of the periods set forth above.

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Parenthetical) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Amounts reclassified from accumulated other comprehensive income (loss)	$ 0	$ 0	$ 0

Noncontrolling Interests - Addi

Noncontrolling Interests - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Noncontrolling Interest [Abstract]
Consolidated joint ventures	$ 394,995	$ 404,997
Noncontrolling interests in consolidated real estate fund aggregated	66,887	14,549
Operating partnerships	428,982	425,797
Redemption value	$ 315,595	$ 390,231
Common units conversion basis	one-for-one

Variable Interest Entities ("VI

Variable Interest Entities ("VIEs") - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018
Variable Interest Entities [Abstract]
Percentage of ownership in operating partnership	90.30%

Variable Interest Entities ("_2

Variable Interest Entities ("VIEs") - Summary of Assets and Liabilities of Consolidated Variable Interest Entities (Details) - USD ($) $ in Thousands		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Real estate, net		$ 7,457,012		$ 7,841,530
Cash and restricted cash		25,756		31,044		$ 29,374	$ 41,823
Preferred equity investments, net		36,042		35,817
Accounts and other receivables, net		20,076		17,082
Deferred rent receivable		267,456		220,826
Deferred charges, net		117,858		98,645
Intangible assets, net		270,445		352,206
Other assets		109,805		20,076
Total assets		8,755,978	[1]	8,917,661	[1]	$ 8,867,168
Notes and mortgages payable, net		3,599,800		3,583,100
Accounts payable and accrued expenses		124,334		117,630
Intangible liabilities, net		95,991		130,028
Other liabilities		51,170		54,109
Total liabilities	[1]	3,864,314		3,895,577
Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Real estate, net		1,699,618		1,726,800
Cash and restricted cash		63,450		55,658
Investments in unconsolidated joint ventures		52,923		16,031
Preferred equity investments, net		36,042		35,817
Accounts and other receivables, net		2,107		2,550
Deferred rent receivable		51,926		44,000
Deferred charges, net		14,160		8,123
Intangible assets, net		45,818		66,112
Other assets		16,635		929
Total assets		1,982,679		1,956,020
Notes and mortgages payable, net		1,197,644		1,196,607
Accounts payable and accrued expenses		24,183		21,211
Intangible liabilities, net		31,582		46,365
Other liabilities		5		155
Total liabilities		$ 1,253,414		$ 1,264,338
[1]	Represents the consolidated assets and liabilities of Paramount Group Operating Partnership LP, a Delaware limited partnership (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which we are the sole general partner and own approximately 90.3% as of December 31, 2018. The assets and liabilities of the Operating Partnership, as of December 31, 2018, include $1,982,679 and $1,253,414 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 14, Variable Interest Entities (“VIEs”).

Variable Interest Entities ("_3

Variable Interest Entities ("VIEs") - Summary of Investments in Unconsolidated Real Estate Funds and Maximum Risk of Loss from Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	$ 10,352	$ 7,253
Investment [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	10,352	7,253
Asset Management Fees and Other Receivables [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	722	597
Maximum Risk of Loss [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	$ 11,074	$ 7,850

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Values of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	$ 22,660	$ 29,039
Interest rate swap assets (included in “other assets”)	16,859	9,855
Total assets	39,519	38,894
Interest rate swap liabilities (included in “other liabilities”)	48	317
Total liabilities	48	317
Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	22,660	29,039
Total assets	22,660	29,039
Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap assets (included in “other assets”)	16,859	9,855
Total assets	16,859	9,855
Interest rate swap liabilities (included in “other liabilities”)	48	317
Total liabilities	$ 48	$ 317

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Carrying Amounts and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total assets	$ 39,519	$ 38,894
Total liabilities	48	317
Carrying Amount [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Preferred equity investments	36,042	35,817
Total assets	36,042	35,817
Notes and mortgages payable	3,599,800	3,583,100
Total liabilities	3,599,800	3,583,100
Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Preferred equity investments	36,339	36,112
Total assets	36,339	36,112
Notes and mortgages payable	3,617,961	3,596,953
Total liabilities	$ 3,617,961	$ 3,596,953

Revenues - Summary of Revenues

Revenues - Summary of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation Of Revenue [Line Items]
Rental income									$ 667,360	$ 628,883	$ 590,161
Tenant reimbursement income									56,950	52,418	44,943
Fee income:
Total fee income									18,629	24,212	16,931
Lease termination income									2,985	2,189	17,010
Other income									13,037	11,265	14,296
Total fee and other income									34,651	37,666	48,237
Total revenues	$ 190,675	$ 192,596	$ 191,419	$ 184,271	$ 180,257	$ 179,770	$ 177,704	$ 181,236	758,961	718,967	683,341
Property Management Fees [Member]
Fee income:
Total fee income									6,163	6,336	5,948
Asset Management Fees [Member]
Fee income:
Total fee income									7,912	8,581	7,754
Acquisition, Disposition and Leasing Fee [Member]
Fee income:
Total fee income									3,160	7,770	2,026
Other Fee Income [Member]
Fee income:
Total fee income									$ 1,394	$ 1,525	$ 1,203

Revenues - Summary of Revenue_2

Revenues - Summary of Revenues (Parenthetical) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation Of Revenue [Line Items]
Lease termination income	$ 2,985,000	$ 2,189,000	$ 17,010,000
1633 Broadway [Member]
Disaggregation Of Revenue [Line Items]
Lease termination income			$ 10,861

Revenues - Schedule of Future M

Revenues - Schedule of Future Minimum Cash Rents Under Non-Cancelable Operating Leases (Details) $ in Thousands	Dec. 20, 2018USD ($)
Revenue From Contract With Customer [Abstract]
2,019	$ 611,301
2,020	606,339
2,021	553,330
2,022	519,559
2,023	473,206
Thereafter	2,790,256
Total	$ 5,553,991

Revenues - Summary of Amount Re

Revenues - Summary of Amount Receivable from Customers under Various Fee Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2017	$ 17,082
Balance as of December 31, 2018	20,076
Revenue from Contract with Customers Under Various Fee Agreements [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2017	1,558
Balance as of December 31, 2018	2,075
Increase	517
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2017	290
Balance as of December 31, 2018	567
Increase	277
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Asset Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2017	762
Balance as of December 31, 2018	954
Increase	192
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Acquisition, Disposition and Leasing Fee [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2017	490
Balance as of December 31, 2018	490
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Other Fee Income [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2017	16
Balance as of December 31, 2018	64
Increase	$ 48

Revenues - Additional Informati

Revenues - Additional Information (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Other Fee Income [Member]
Disaggregation Of Revenue [Line Items]
Contract liabilities	$ 400,000	$ 387,000
All Other Non-Lease Revenue [Member]
Disaggregation Of Revenue [Line Items]
Contract liabilities	0	0
Contract asset	$ 0	$ 0

Real Estate Impairment Loss - A

Real Estate Impairment Loss - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018USD ($)
Real Estate [Abstract]
Real estate impairment loss	$ 46,000,000

Interest and Other Income (Lo_3

Interest and Other Income (Loss), net - Schedule Of Interest And Other Income (Loss), net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest And Other Income [Abstract]
Preferred equity investment income	$ 3,655	$ 4,187	$ 5,716
Interest and other income	5,384	1,256	774
Mark-to-market of investments in our deferred compensation plans	(922)	5,114	444
Valuation allowance on preferred equity investment		(19,588)
Total interest and other income (loss), net	$ 8,117	$ (9,031)	$ 6,934

Interest and Other Income (Lo_4

Interest and Other Income (Loss), net - Schedule Of Interest And Other Income (Loss), net (Parenthetical) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Preferred equity ownership percentage	24.40%
PGRESS Equity Holdings L.P. [Member]
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Preferred equity investment income, attributable to parent	$ 890	$ 1,029	$ 1,393
Preferred equity ownership percentage	24.40%
PGRESS Equity Holdings L.P. [Member] | 2 Herald Square [Member]
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Preferred equity ownership percentage		24.40%
Valuation allowance on preferred equity investment, attributable to parent		$ 4,780
Valuation allowance on preferred equity investment attributable to noncontrolling interests		$ 14,808

Interest and Debt Expense - Det

Interest and Debt Expense - Details of Interest and Debt Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest And Debt Expense [Abstract]
Interest and debt expense	$ 136,630	$ 132,574	$ 146,334
Amortization of deferred financing costs	11,023	11,188	6,804
Total interest and debt expense	$ 147,653	$ 143,762	$ 153,138

Incentive Compensation - Additi

Incentive Compensation - Additional Information (Details) - USD ($)	Apr. 03, 2018	Feb. 05, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of stock options granted				$ 4.02	$ 3.40
Performance Programs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Unrecognized compensation cost expected to be recognized over a weighted-average period			2 years 3 months 18 days
Performance measurement period, term			3 years
Fair value of awards granted			$ 7,009,000	$ 10,520,000	$ 10,914,000
Unrecognized compensation cost			$ 10,537,000
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Fair value granted			$ 1,335,000	1,309,000	1,600,000
Unrecognized compensation cost expected to be recognized over a weighted-average period			2 years 3 months 18 days
Unrecognized compensation cost			$ 1,918,000
Employee Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost			$ 1,370,000
Unrecognized compensation cost expected to be recognized over a weighted-average period			1 year
Stock options, granted			0
Stock Options Expiration Period			10 years
Employee Stock Option [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			5 years
Employee Stock Option [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			3 years
Equity Incentive Plan [Member] | Full Value Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant			9,643,663
Equity Incentive Plan [Member] | Full Value Awards [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant						17,142,857
Equity Incentive Plan [Member] | Not Full Value Awards [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant						34,285,714
LTIP Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value granted			$ 10,145,000	$ 7,467,000	$ 10,106,000
Unrecognized compensation cost			$ 12,387,000
Unrecognized compensation cost expected to be recognized over a weighted-average period			2 years
LTIP Units [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			5 years
LTIP Units [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			3 years
2017 Performance Program [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		4 years
Performance measurement period, term		3 years
Fair value of awards granted		$ 7,009,000
Performance measurement period, start date		Jan. 1, 2018
Performance measurement period, end date		Dec. 31, 2020
2017 Performance Program [Member] | Share-Based Compensation Award Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the awards that vest		50.00%
2017 Performance Program [Member] | Share-Based Compensation Award Tranche Two [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the awards that vest		50.00%
2015 Performance Program [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost expected to be recognized over a weighted-average period	1 year 7 months 6 days
Unrecognized compensation cost	$ 947,000
Performance measurement period, units forfeited	779,055

Incentive Compensation - Summar

Incentive Compensation - Summary of Components of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 19,646	$ 15,922	$ 11,278
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	1,954	2,214	1,590
Performance-Based Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	7,645	6,421	3,680
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	988	715	391
LTIP Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 9,059	$ 6,572	$ 5,617

Incentive Compensation - Summ_2

Incentive Compensation - Summary of LTIP Unit Activity (Details)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Performance Programs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Units, Unvested as of December 31, 2017 | shares	3,253,991
Units, Granted | shares	1,382,807
Units, Cancelled or expired | shares	(1,263,228)
Units, Unvested as of December 31, 2018 | shares	3,373,570
Weighted-Average Grant-Date Fair Value (per unit/share), Unvested as of December 31, 2017 | $ / shares	$ 8.72
Weighted-Average Grant-Date Fair Value (per unit/share), Granted | $ / shares	5.07
Weighted-Average Grant-Date Fair Value (per unit/share), Cancelled or expired | $ / shares	8.59
Weighted-Average Grant-Date Fair Value (per unit/share), Unvested as of December 31, 2018 | $ / shares	$ 7.27
LTIP Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Units, Unvested as of December 31, 2017 | shares	1,090,764
Units, Granted | shares	754,069
Units, Vested | shares	(516,318)
Units, Cancelled or expired | shares	(44,432)
Units, Unvested as of December 31, 2018 | shares	1,284,083
Weighted-Average Grant-Date Fair Value (per unit/share), Unvested as of December 31, 2017 | $ / shares	$ 15.70
Weighted-Average Grant-Date Fair Value (per unit/share), Granted | $ / shares	13.45
Weighted-Average Grant-Date Fair Value (per unit/share), Vested | $ / shares	15.66
Weighted-Average Grant-Date Fair Value (per unit/share), Cancelled or expired | $ / shares	15.40
Weighted-Average Grant-Date Fair Value (per unit/share), Unvested as of December 31, 2018 | $ / shares	$ 14.41

Incentive Compensation - Summ_3

Incentive Compensation - Summary of Restricted Stock Activity (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Units, Unvested as of December 31, 2017 | shares	129,005
Units, Granted | shares	93,961
Units, Vested | shares	(42,325)
Units, Cancelled or expired | shares	(17,660)
Units, Unvested as of December 31, 2018 | shares	162,981
Weighted-Average Grant-Date Fair Value (per unit/share), Unvested as of December 31, 2017 | $ / shares	$ 16.33
Weighted-Average Grant-Date Fair Value (per unit/share), Granted | $ / shares	14.21
Weighted-Average Grant-Date Fair Value (per unit/share), Vested | $ / shares	16.18
Weighted-Average Grant-Date Fair Value (per unit/share), Cancelled or expired | $ / shares	15.24
Weighted-Average Grant-Date Fair Value (per unit/share), Unvested as of December 31, 2018 | $ / shares	$ 15.26

Incentive Compensation - Summ_4

Incentive Compensation - Summary of Fair Value of the Option (Details) - Employee Stock Option [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility	29.00%	29.00%
Expected life	5 years 10 months 24 days	5 years 10 months 24 days
Risk free interest rate	2.20%	1.50%
Expected dividend yield	2.30%	2.30%

Incentive Compensation - Summ_5

Incentive Compensation - Summary of Stock Option Activity (Details)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-Average Exercise Price, Outstanding at December 31, 2017 | $ / shares	$ 17.20
Weighted-Average Exercise Price, Cancelled or expired | $ / shares	18
Weighted-Average Exercise Price, Outstanding at December 31, 2018 | $ / shares	17.08
Weighted-Average Exercise Price, Options vested and expected to vest at December 31, 2018 | $ / shares	17.14
Weighted-Average Exercise Price, Options exercisable at December 31, 2018 | $ / shares	$ 17.20
Weighted-Average Remaining Contractual Term (in years), Outstanding at December 31, 2018	6 years 8 months 12 days
Weighted-Average Remaining Contractual Term (in years), Options vested and expected to vest at December 31, 2018	6 years 6 months
Weighted-Average Remaining Contractual Term (in years), Options exercisable at December 31, 2018	6 years 2 months 12 days
Employee Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Outstanding at December 31, 2017	2,448,743
Shares, Granted	0
Shares, Cancelled or expired	(316,800)
Shares, Outstanding at December 31, 2018	2,131,943
Shares, Options vested and expected to vest at December 31, 2018	2,083,994
Shares, Options exercisable at December 31, 2018	1,496,664

Earnings Per Share - Summary of

Earnings Per Share - Summary of Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Numerator:
Net income (loss) attributable to common stockholders	$ 5,318	$ 37,531	$ (34,816)	$ 1,114	$ (6,793)	$ (10,214)	$ 103,016	$ 372	$ 9,147	$ 86,381	$ (9,934)
Earnings allocated to unvested participating securities									(79)	(98)	(37)
Numerator for income (loss) per common share - basic and diluted									$ 9,068	$ 86,283	$ (9,971)
Denominator:
Denominator for basic income (loss) per common share - weighted average shares									239,526,694	236,372,801	218,053,062
Effect of dilutive employee stock options and restricted share awards									29,000	29,000
Denominator for diluted income (loss) per common share - weighted average shares									239,555,636	236,401,548	218,053,062
Income (loss) per common share - basic and diluted									$ 0.04	$ 0.37	$ (0.05)

Earnings Per Share - Summary _2

Earnings Per Share - Summary of Computation of Earnings Per Share (Parenthetical) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Effect of dilutive securities excluded from computation of earning per share	27,510	30,848	48,113

Summary of Quarterly Results _3

Summary of Quarterly Results (unaudited) - Summary of Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Data [Abstract]
Revenues	$ 190,675	$ 192,596	$ 191,419	$ 184,271	$ 180,257	$ 179,770	$ 177,704	$ 181,236	$ 758,961	$ 718,967	$ 683,341
Net income (loss) attributable to the common stockholders	$ 5,318	$ 37,531	$ (34,816)	$ 1,114	$ (6,793)	$ (10,214)	$ 103,016	$ 372	$ 9,147	$ 86,381	$ (9,934)
Income (Loss) Per Common Share Basic	$ 0.02	$ 0.16	$ (0.14)	$ 0	$ (0.03)	$ (0.04)	$ 0.44	$ 0	$ 0.04	$ 0.37	$ (0.05)
Income (Loss) Per Common Share Diluted	$ 0.02	$ 0.16	$ (0.14)	$ 0	$ (0.03)	$ (0.04)	$ 0.44	$ 0	$ 0.04	$ 0.37	$ (0.05)

Related Parties - Additional In

Related Parties - Additional Information (Details)	Nov. 13, 2018USD ($)	Dec. 31, 2018USD ($)ft²	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Related Party Transaction [Line Items]
Repayments of related party notes	$ 27,299,000	$ 27,299,000
Interest Expense, Related Party		334,000	$ 197,000	$ 139,000
Fee and other income		34,651,000	37,666,000	48,237,000
Accounts and other receivables, net		20,076,000	17,082,000
Property management, asset management, leasing and other related services fee income		18,629,000	24,212,000	16,931,000
Transaction related costs		1,471,000	2,027,000	2,404,000
Accounts payable and accrued expenses		$ 124,334,000	117,630,000
Area of related party lease | ft²		11,900,000
712 Fifth Avenue [Member]
Related Party Transaction [Line Items]
Equity method ownership percentage		50.00%
Management Agreements [Member]
Related Party Transaction [Line Items]
Fee and other income		$ 838,000	824,000	795,000
CNBB-RDF Holdings, LP [Member]
Related Party Transaction [Line Items]
Repayments of related party notes	24,500,000
CNBB-RDF Holdings Otto Family [Member]
Related Party Transaction [Line Items]
Repayments of related party notes	$ 2,799,000
CNBB-RDF Holdings Otto Family [Member] | Management Agreements [Member]
Related Party Transaction [Line Items]
Accounts and other receivables, net		51,000	0
Unconsolidated Joint Ventures and Real Estate Funds [Member] | Management Agreements [Member]
Related Party Transaction [Line Items]
Accounts and other receivables, net		1,836,000	1,627,000
Property management, asset management, leasing and other related services fee income		$ 15,231,000	20,263,000	9,920,000
Hamburg Trust Consulting GMBH ("HTC") [Member]
Related Party Transaction [Line Items]
Mark-up cost percentage		10.00%
Transaction related costs		$ 240,000	247,000	625,000
Accounts payable and accrued expenses		$ 40,000	51,000
Hamburg Trust Consulting GMBH ("HTC") [Member] | Chairman, Chief Executive Officer and President [Member]
Related Party Transaction [Line Items]
Percentage of ownership		100.00%
Mannheim Trust [Member] | Board of Director [Member] | 712 Fifth Avenue [Member]
Related Party Transaction [Line Items]
Equity method ownership percentage		50.00%
Area of related party lease | ft²		5,593
Lease rental income		$ 366,000	$ 358,000	$ 416,000
Notes Payable To Related Parties [Member] | CNBB-RDF Holdings, LP [Member]
Related Party Transaction [Line Items]
Note payable, fixed bearing interest rate		1.40%
Notes Payable To Related Parties [Member] | CNBB-RDF Holdings Otto Family [Member]
Related Party Transaction [Line Items]
Note payable, fixed bearing interest rate		1.40%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018ft²	Feb. 16, 2018USD ($)	Nov. 23, 2014ft²
Other Commitments [Line Items]
Area of office properties | ft²	11,900,000
Minimum [Member] | New York State Division Of Taxation And Finance [Member]
Other Commitments [Line Items]
Loss Contingency, Estimate of Possible Loss | $		$ 0
Maximum [Member] | New York State Division Of Taxation And Finance [Member]
Other Commitments [Line Items]
Loss Contingency, Estimate of Possible Loss | $		$ 39,800,000
718 Fifth Avenue [Member]
Other Commitments [Line Items]
Put right notice period	12 months
712 Fifth Avenue [Member]
Other Commitments [Line Items]
Equity method ownership percentage	50.00%
Predecessor [Member] | 718 Fifth Avenue [Member]
Other Commitments [Line Items]
Percentage of tenancy-in-common interest in property			50.00%
Predecessor [Member] | 712 Fifth Avenue [Member]
Other Commitments [Line Items]
Equity method ownership percentage	50.00%
Owned by Affiliate [Member] | Predecessor [Member] | 718 Fifth Avenue [Member] | Third Party Affiliate [Member]
Other Commitments [Line Items]
Equity method ownership percentage			25.00%
Owned by Affiliate [Member] | Parent Company [Member] | Put Right Exercised [Member] | 718 Fifth Avenue [Member]
Other Commitments [Line Items]
Pre IPO ownership percentage	25.00%
Owned by Affiliate [Member] | Retail Type Space [Member] | Predecessor [Member] | 718 Fifth Avenue [Member]
Other Commitments [Line Items]
Area of office properties | ft²			19,050

Segments - Additional Informati

Segments - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segments - Schedule of NOI for

Segments - Schedule of NOI for Each Reportable Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Property-related revenues	$ 740,332	$ 694,755	$ 666,410
Property-related operating expenses	(274,078)	(266,136)	(250,040)
NOI from unconsolidated joint ventures	20,730	19,643	17,195
NOI	486,984	448,262	433,565
New York [Member]
Segment Reporting Information [Line Items]
Property-related revenues	468,013	430,548	449,794
Property-related operating expenses	(188,008)	(180,855)	(176,445)
NOI from unconsolidated joint ventures	20,395	19,143	16,874
NOI	300,400	268,836	290,223
Washington, D.C. [Member]
Segment Reporting Information [Line Items]
Property-related revenues	51,290	72,143	86,389
Property-related operating expenses	(19,381)	(27,342)	(32,721)
NOI	31,909	44,801	53,668
San Francisco [Member]
Segment Reporting Information [Line Items]
Property-related revenues	222,071	191,677	127,813
Property-related operating expenses	(60,043)	(50,906)	(30,889)
NOI	162,028	140,771	96,924
Other [Member]
Segment Reporting Information [Line Items]
Property-related revenues	(1,042)	387	2,414
Property-related operating expenses	(6,646)	(7,033)	(9,985)
NOI from unconsolidated joint ventures	335	500	321
NOI	$ (7,353)	$ (6,146)	$ (7,250)

Segments - Schedule of Reconcil

Segments - Schedule of Reconciliation of NOI to Net Income Attributable to Common Stockholders (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
NOI									$ 486,984,000	$ 448,262,000	$ 433,565,000
Fee income									18,629,000	24,212,000	16,931,000
Depreciation and amortization expense									(258,225,000)	(266,037,000)	(269,450,000)
General and administrative expenses									(57,563,000)	(61,577,000)	(53,510,000)
Transaction related costs									(1,471,000)	(2,027,000)	(2,404,000)
NOI from unconsolidated joint ventures									(20,730,000)	(19,643,000)	(17,195,000)
Income from unconsolidated joint ventures									3,468,000	20,185,000	7,413,000
Loss from unconsolidated real estate funds									(269,000)	(6,143,000)	(498,000)
Interest and other income (loss), net									8,117,000	(9,031,000)	6,934,000
Interest and debt expense									(147,653,000)	(143,762,000)	(153,138,000)
Loss on early extinguishment of debt										(7,877,000)	(4,608,000)
Real estate impairment loss									(46,000,000)
Gain on sale of real estate									36,845,000	133,989,000
Unrealized gain on interest rate swaps										1,802,000	39,814,000
Net income before income taxes									22,132,000	112,353,000	3,854,000
Income tax expense									(3,139,000)	(5,177,000)	(1,785,000)
Net income									18,993,000	107,176,000	2,069,000
Consolidated joint ventures									(8,182,000)	10,365,000	(15,423,000)
Consolidated real estate fund									(720,000)	(19,797,000)	1,316,000
Operating Partnership									(944,000)	(11,363,000)	2,104,000
Net income (loss) attributable to common stockholders	$ 5,318,000	$ 37,531,000	$ (34,816,000)	$ 1,114,000	$ (6,793,000)	$ (10,214,000)	$ 103,016,000	$ 372,000	$ 9,147,000	$ 86,381,000	$ (9,934,000)

Segments - Schedule of Total As

Segments - Schedule of Total Assets for Each Reportable Segments Information (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Segment Reporting Information [Line Items]
Total assets	$ 8,755,978	[1]	$ 8,917,661	[1]	$ 8,867,168
New York [Member]
Segment Reporting Information [Line Items]
Total assets	5,583,022		5,511,061		5,617,344
Washington, D.C. [Member]
Segment Reporting Information [Line Items]
Total assets	305,980		693,408		1,075,350
San Francisco [Member]
Segment Reporting Information [Line Items]
Total assets	2,388,094		2,421,173		1,913,747
Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 478,882		$ 292,019		$ 260,727
[1]	Represents the consolidated assets and liabilities of Paramount Group Operating Partnership LP, a Delaware limited partnership (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which we are the sole general partner and own approximately 90.3% as of December 31, 2018. The assets and liabilities of the Operating Partnership, as of December 31, 2018, include $1,982,679 and $1,253,414 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 14, Variable Interest Entities (“VIEs”).

Schedule-II - Valuation and Q_2

Schedule-II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 19,865	$ 202
Additions Charged Against Operations	324	19,711
Uncollectible accounts Written-off	(19,596)	(48)
Balance at End of Year	593	19,865	$ 202
Allowance for Doubtful Accounts [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	277	202	365
Additions Charged Against Operations	324	123	315
Uncollectible accounts Written-off	(8)	(48)	(478)
Balance at End of Year	593	277	$ 202
Allowance for Preferred Equity Investments [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	19,588
Additions Charged Against Operations		19,588
Uncollectible accounts Written-off	$ (19,588)
Balance at End of Year		$ 19,588

Schedule III - Real Estate an_2

Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				$ 3,599,800
Initial cost to company, Land				2,065,206
Initial cost to company, Building and Improvements				5,621,664
Costs capitalized subsequent to acquisition, Building and Improvements				414,781
Gross amount at which carried at close of period, Land				2,065,206
Gross amount at which carried at close of period, Buildings and Improvements				6,036,445
Gross amount at which carried at close of period, Total	$ 8,101,651	$ 8,329,475	$ 7,849,093	8,101,651
Accumulated depreciation and amortization	(644,639)	(487,945)	(318,161)	(644,639)
Costs capitalized subsequent to acquisition, Building and Improvements, other				4,572
Gross amount at which carried at close of period, Buildings and Improvements, other				4,572
Gross amount at which carried at close of period, other				4,572
Accumulated depreciation and amortization, other	$ (1,332)
Date acquired, other	Nov. 24, 2014
Real Estate:
Beginning balance	$ 8,329,475	7,849,093	7,652,117
Acquisitions		484,916	504,684
Buildings and improvements	146,378	82,862	116,038
Assets held for sale			(412,315)
Real estate impairment loss	(46,000)
Assets sold and written-off	(328,202)	(87,396)	(11,431)
Ending balance	8,101,651	8,329,475	7,849,093
Accumulated Depreciation:
Beginning balance	487,945	318,161	243,089
Additions charged to expense	188,871	182,732	168,847
Accumulated depreciation related to assets held for sale			(82,344)
Accumulated depreciation related to assets sold and written-off	(32,177)	(12,948)	(11,431)
Ending balance	$ 644,639	$ 487,945	$ 318,161
Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed, other	5 years
Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed, other	40 years
1633 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				1,046,800
Initial cost to company, Land				502,846
Initial cost to company, Building and Improvements				1,398,341
Costs capitalized subsequent to acquisition, Building and Improvements				125,286
Gross amount at which carried at close of period, Land				502,846
Gross amount at which carried at close of period, Buildings and Improvements				1,523,627
Gross amount at which carried at close of period, Total	$ 2,026,473			2,026,473
Accumulated depreciation and amortization	$ (168,325)			(168,325)
Date of construction	Dec. 31, 1971
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 2,026,473
Accumulated Depreciation:
Ending balance	$ 168,325
1633 Broadway [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
1633 Broadway [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1301 Avenue of Americas [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				850,000
Initial cost to company, Land				406,039
Initial cost to company, Building and Improvements				1,051,697
Costs capitalized subsequent to acquisition, Building and Improvements				91,556
Gross amount at which carried at close of period, Land				406,039
Gross amount at which carried at close of period, Buildings and Improvements				1,143,253
Gross amount at which carried at close of period, Total	$ 1,549,292			1,549,292
Accumulated depreciation and amortization	$ (128,742)			(128,742)
Date of construction	Dec. 31, 1963
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 1,549,292
Accumulated Depreciation:
Ending balance	$ 128,742
1301 Avenue of Americas [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
1301 Avenue of Americas [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
31 West 52nd Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				500,000
Initial cost to company, Land				221,318
Initial cost to company, Building and Improvements				604,994
Costs capitalized subsequent to acquisition, Building and Improvements				44,739
Gross amount at which carried at close of period, Land				221,318
Gross amount at which carried at close of period, Buildings and Improvements				649,733
Gross amount at which carried at close of period, Total	$ 871,051			871,051
Accumulated depreciation and amortization	$ (68,588)			(68,588)
Date of construction	Dec. 31, 1987
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 871,051
Accumulated Depreciation:
Ending balance	$ 68,588
31 West 52nd Street [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
31 West 52nd Street [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1325 Avenue of the Americas [Member]
Real Estate And Accumulated Depreciation [Line Items]
Initial cost to company, Land				174,688
Initial cost to company, Building and Improvements				370,553
Costs capitalized subsequent to acquisition, Building and Improvements				30,395
Gross amount at which carried at close of period, Land				174,688
Gross amount at which carried at close of period, Buildings and Improvements				400,948
Gross amount at which carried at close of period, Total	$ 575,636			575,636
Accumulated depreciation and amortization	$ (45,238)			(45,238)
Date of construction	Dec. 31, 1989
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 575,636
Accumulated Depreciation:
Ending balance	$ 45,238
1325 Avenue of the Americas [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
1325 Avenue of the Americas [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
900 Third Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Initial cost to company, Land				103,741
Initial cost to company, Building and Improvements				296,031
Costs capitalized subsequent to acquisition, Building and Improvements				14,745
Gross amount at which carried at close of period, Land				103,741
Gross amount at which carried at close of period, Buildings and Improvements				310,776
Gross amount at which carried at close of period, Total	$ 414,517			414,517
Accumulated depreciation and amortization	$ (38,314)			(38,314)
Date of construction	Dec. 31, 1983
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 414,517
Accumulated Depreciation:
Ending balance	$ 38,314
900 Third Avenue [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
900 Third Avenue [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Total New York [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				2,396,800
Initial cost to company, Land				1,408,632
Initial cost to company, Building and Improvements				3,721,616
Costs capitalized subsequent to acquisition, Building and Improvements				306,721
Gross amount at which carried at close of period, Land				1,408,632
Gross amount at which carried at close of period, Buildings and Improvements				4,028,337
Gross amount at which carried at close of period, Total	$ 5,436,969			5,436,969
Accumulated depreciation and amortization	(449,207)			(449,207)
Real Estate:
Ending balance	5,436,969
Accumulated Depreciation:
Ending balance	449,207
Liberty Place [Member]
Real Estate And Accumulated Depreciation [Line Items]
Initial cost to company, Land				46,401
Initial cost to company, Building and Improvements				96,422
Costs capitalized subsequent to acquisition, Building and Improvements				12,741
Gross amount at which carried at close of period, Land				46,401
Gross amount at which carried at close of period, Buildings and Improvements				109,163
Gross amount at which carried at close of period, Total	155,564			155,564
Accumulated depreciation and amortization	$ (14,233)			(14,233)
Date of construction	Dec. 31, 1993
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 155,564
Accumulated Depreciation:
Ending balance	$ 14,233
Liberty Place [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
Liberty Place [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1899 Pennsylvania Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Initial cost to company, Land				52,568
Initial cost to company, Building and Improvements				94,874
Costs capitalized subsequent to acquisition, Building and Improvements				4,207
Gross amount at which carried at close of period, Land				52,568
Gross amount at which carried at close of period, Buildings and Improvements				99,081
Gross amount at which carried at close of period, Total	$ 151,649			151,649
Accumulated depreciation and amortization	$ (12,432)			(12,432)
Date of construction	Dec. 31, 1915
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 151,649
Accumulated Depreciation:
Ending balance	$ 12,432
1899 Pennsylvania Avenue [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
1899 Pennsylvania Avenue [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Total Washington, D.C. [Member]
Real Estate And Accumulated Depreciation [Line Items]
Initial cost to company, Land				98,969
Initial cost to company, Building and Improvements				191,296
Costs capitalized subsequent to acquisition, Building and Improvements				16,948
Gross amount at which carried at close of period, Land				98,969
Gross amount at which carried at close of period, Buildings and Improvements				208,244
Gross amount at which carried at close of period, Total	$ 307,213			307,213
Accumulated depreciation and amortization	(26,665)			(26,665)
Real Estate:
Ending balance	307,213
Accumulated Depreciation:
Ending balance	26,665
One Market Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				975,000
Initial cost to company, Land				288,743
Initial cost to company, Building and Improvements				988,014
Costs capitalized subsequent to acquisition, Building and Improvements				70,757
Gross amount at which carried at close of period, Land				288,743
Gross amount at which carried at close of period, Buildings and Improvements				1,058,771
Gross amount at which carried at close of period, Total	1,347,514			1,347,514
Accumulated depreciation and amortization	$ (125,743)			(125,743)
Date of construction	Dec. 31, 1976
Date acquired	Nov. 24, 2014
Real Estate:
Ending balance	$ 1,347,514
Accumulated Depreciation:
Ending balance	$ 125,743
One Market Plaza [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
One Market Plaza [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
One Front Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Initial cost to company, Land				127,765
Initial cost to company, Building and Improvements				376,919
Costs capitalized subsequent to acquisition, Building and Improvements				7,731
Gross amount at which carried at close of period, Land				127,765
Gross amount at which carried at close of period, Buildings and Improvements				384,650
Gross amount at which carried at close of period, Total	$ 512,415			512,415
Accumulated depreciation and amortization	$ (24,824)			(24,824)
Date of construction	Dec. 31, 1979
Date acquired	Dec. 31, 2016
Real Estate:
Ending balance	$ 512,415
Accumulated Depreciation:
Ending balance	$ 24,824
One Front Street [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
One Front Street [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
50 Beale Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				228,000
Initial cost to company, Land				141,097
Initial cost to company, Building and Improvements				343,819
Costs capitalized subsequent to acquisition, Building and Improvements				8,052
Gross amount at which carried at close of period, Land				141,097
Gross amount at which carried at close of period, Buildings and Improvements				351,871
Gross amount at which carried at close of period, Total	$ 492,968			492,968
Accumulated depreciation and amortization	$ (16,868)			(16,868)
Date of construction	Dec. 31, 1968
Date acquired	Jul. 17, 2017
Real Estate:
Ending balance	$ 492,968
Accumulated Depreciation:
Ending balance	$ 16,868
50 Beale Street [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	5 years
50 Beale Street [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Total San Francisco [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances				1,203,000
Initial cost to company, Land				557,605
Initial cost to company, Building and Improvements				1,708,752
Costs capitalized subsequent to acquisition, Building and Improvements				86,540
Gross amount at which carried at close of period, Land				557,605
Gross amount at which carried at close of period, Buildings and Improvements				1,795,292
Gross amount at which carried at close of period, Total	$ 2,352,897			2,352,897
Accumulated depreciation and amortization	(167,435)			$ (167,435)
Real Estate:
Ending balance	2,352,897
Accumulated Depreciation:
Ending balance	$ 167,435

Schedule III - Real Estate an_3

Schedule III - Real Estate and Accumulated Depreciation (Parenthetical) (Details) $ in Billions	Dec. 31, 2018USD ($)
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Assets and liabilities for tax purposes	$ 2.6