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Investments in Unconsolidated Joint Ventures (Investments in Unconsolidated Joint Ventures) (Details)
$ in Thousands

12 Months Ended

Dec. 31, 2020

USD ($)

ft²

payments

Buildings

Jun. 25, 2020

Land_Parcels

Jan. 28, 2020

Dec. 31, 2019

USD ($)

Schedule of Equity Method Investments [Line Items]

Other Liabilities

$ (412,084)

$ (387,994)

Investments in unconsolidated joint ventures

1,310,478

955,647

Investments In Affiliates Subsidiaries Associates And Joint Ventures net

^[1]

1,273,919

933,223

Unconsolidated Joint Ventures [Member]

Schedule of Equity Method Investments [Line Items]

Other Liabilities

$ (36,600)

(22,400)

Square 407 Limited Partnership [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Market Square North

Ownership Percentage

50.00%

Other Liabilities

^[1]

$ (3,766)

(4,872)

BP/CRF Metropolitan Square LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Metropolitan Square

Ownership Percentage

20.00%

Other Liabilities

^[1]

$ (13,584)

Investments in unconsolidated joint ventures

^[1]

9,134

901 New York Avenue LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

901 New York Avenue

Ownership Percentage

^[2]

25.00%

Other Liabilities

^[1]

$ (12,264)

(12,113)

901 New York Avenue LLC (economic ownership) [Member]

Schedule of Equity Method Investments [Line Items]

Ownership Percentage

50.00%

WP Project Developer LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Wisconsin Place Land and Infrastructure

Ownership Percentage

^[3]

33.30%

Investments in unconsolidated joint ventures

^[1]

$ 35,297

36,789

Annapolis Junction NFM, LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Annapolis Junction

Ownership Percentage

50.00%

^[4]

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 13,463

25,391

Number of real estate properties | Buildings

2

Parcels of undeveloped land | Land_Parcels

2

540 Madison Venture

Schedule of Equity Method Investments [Line Items]

Properties

540 Madison Avenue

Ownership Percentage

^[5]

60.00%

Investments in unconsolidated joint ventures

^[1]

$ 122

2,953

500 North Capitol Venture LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

500 North Capitol Street, NW

Ownership Percentage

30.00%

Other Liabilities

^[1]

$ (6,945)

(5,439)

501 K Street LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

1001 6th Street

Ownership Percentage

^[6]

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 42,499

42,496

Potential additonal payments to joint venture partner | payments

2

Minimum square footage to make a potential additional payment to joint venture partner (in sqft) | ft²

520,000

Podium Developer LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

The Hub on Causeway - Podium

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 48,818

49,466

Residential Tower Developer LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Hub50House

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 50,943

55,092

Hotel Tower Developer LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

The Hub on Causeway - Hotel Air Rights

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 10,754

9,883

Office Tower Developer LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

100 Causeway Street

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 56,312

56,606

1265 Main Office JV LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

1265 Main Street

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 3,787

3,780

BNY Tower Holdings LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Dock 72

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 29,536

94,804

BNYA Amenity Operator LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Dock 72

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 1,846

CA-Colorado Center Limited Partnership [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Colorado Center

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 227,671

252,069

7750 Wisconsin Avenue LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

7750 Wisconsin Avenue

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 58,112

56,247

BP-M 3HB Venture LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

3 Hudson Boulevard

Ownership Percentage

25.00%

Investments in unconsolidated joint ventures

^[1]

$ 113,774

67,499

SMBP Venture LP [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Santa Monica Business Park

Ownership Percentage

55.00%

Investments in unconsolidated joint ventures

^[1]

$ 145,761

163,937

Platform 16 Holdings LP [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Platform 16

Ownership Percentage

55.00%

^[7]

55.00%

Investments in unconsolidated joint ventures

^[1]

$ 108,393

$ 29,501

Gateway Portfolio Holdings LLC [Member]

Schedule of Equity Method Investments [Line Items]

Properties

Gateway Commons

Ownership Percentage

50.00%

^[8]

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 336,206

Rosecrans-Sepulveda Partners 4, LLC

Schedule of Equity Method Investments [Line Items]

Properties

Beach Cities Media Campus

Ownership Percentage

50.00%

Investments in unconsolidated joint ventures

^[1]

$ 27,184

Entity Owning Land And Infrastructure Of Project [Member]

Schedule of Equity Method Investments [Line Items]

Ownership Percentage

33.30%

Gateway Commons Complex prior to deferred contribution [Member] [Member]

Schedule of Equity Method Investments [Line Items]

Ownership Percentage

55.00%

Gateway Commons Complex Future Development[Member] [Member]

Schedule of Equity Method Investments [Line Items]

Ownership Percentage

49.00%

Joint Venture Partner [Member] | Gateway Portfolio Holdings LLC [Member]

Schedule of Equity Method Investments [Line Items]

Ownership Percentage

50.00%

Joint Venture Partner [Member] | Gateway Commons Complex Future Development[Member] [Member]

Schedule of Equity Method Investments [Line Items]

Ownership Percentage

51.00%

[1]	Investments with deficit balances aggregating approximately $36.6 million and $22.4 million at December 31, 2020 and 2019, respectively, are included within Other Liabilities in the Company’s Consolidated Balance Sheets.
[2]	The Company’s economic ownership has increased based on the achievement of certain return thresholds. At December 31, 2020 and 2019, the Company’s economic ownership was approximately 50%.
[3]	The Company’s wholly-owned subsidiary that owns Wisconsin Place Office also owns a 33.3% interest in the joint venture entity that owns the land, parking garage and infrastructure of the project.
[4]	The joint venture owns two in-service buildings.
[5]	The property was sold on June 27, 2019. As of December 31, 2020 and 2019, the investment consisted of undistributed cash.
[6]	Under the joint venture agreement for this land parcel, the partner will be entitled to up to two additional payments from the venture based on increases in total entitled square footage of the project above 520,000 square feet and achieving certain project returns at stabilization.
[7]	This entity is a VIE (See Note 1).
[8]	As a result of the partner’s deferred contribution, the Company owns an approximately 55% interest in the joint venture at December 31, 2020. Future development projects will be owned 49% by the Company and 51% by its partner.

X

- Definition

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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