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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2019
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances |  |  |  | $ 3,809,643
Initial cost to company, Land |  |  |  | 2,018,805
Initial cost to company, Building and Improvements |  |  |  | 5,525,242
Costs capitalized subsequent to acquisition, Land |  |  |  | (16,380)
Costs capitalized subsequent to acquisition, Building and Improvements |  |  |  | 456,469
Gross amount at which carried at close of period, Land |  |  |  | 2,002,425
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 5,981,711
Gross amount at which carried at close of period, Total | $ 8,101,651 | $ 8,329,475 | $ 7,849,093 | 7,984,136
Accumulated depreciation and amortization | (644,639) | (487,945) | (318,161) | (790,216)
Costs capitalized subsequent to acquisition, Building and Improvements, other |  |  |  | 6,648
Gross amount at which carried at close of period, Buildings and Improvements, other |  |  |  | 6,648
Gross amount at which carried at close of period, other |  |  |  | 6,648
Accumulated depreciation and amortization, other | $ (2,110) |  |  |
Date acquired, other | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Beginning balance | $ 8,101,651 | 8,329,475 | 7,849,093 |
Acquisitions |  |  | 484,916 |
Buildings and improvements | 105,947 | 146,378 | 82,862 |
Real estate impairment loss | (42,000) | (46,000) |  |
Assets sold and written-off | (181,462) | (328,202) | (87,396) |
Ending balance | 7,984,136 | 8,101,651 | 8,329,475 |
Accumulated Depreciation: |  |  |  |
Beginning balance | 644,639 | 487,945 | 318,161 |
Additions charged to expense | 186,457 | 188,871 | 182,732 |
Accumulated depreciation related to assets sold and written-off | (40,880) | (32,177) | (12,948) |
Ending balance | $ 790,216 | $ 644,639 | $ 487,945 |
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 |  |  |  | 1,250,000
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 |  |  |  | 141,496
Gross amount at which carried at close of period, Land |  |  |  | 502,846
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 1,539,837
Gross amount at which carried at close of period, Total | $ 2,042,683 |  |  | 2,042,683
Accumulated depreciation and amortization | $ (214,523) |  |  | (214,523)
Date of construction | Dec. 31, 1971 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 2,042,683 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 214,523 |  |  |
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 |  |  |  | 94,330
Gross amount at which carried at close of period, Land |  |  |  | 406,039
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 1,146,027
Gross amount at which carried at close of period, Total | $ 1,552,066 |  |  | 1,552,066
Accumulated depreciation and amortization | $ (164,113) |  |  | (164,113)
Date of construction | Dec. 31, 1963 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 1,552,066 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 164,113 |  |  |
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 |  |  |  | 60,269
Gross amount at which carried at close of period, Land |  |  |  | 221,318
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 665,263
Gross amount at which carried at close of period, Total | $ 886,581 |  |  | 886,581
Accumulated depreciation and amortization | $ (87,516) |  |  | (87,516)
Date of construction | Dec. 31, 1987 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 886,581 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 87,516 |  |  |
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 |  |  |  | 50,424
Gross amount at which carried at close of period, Land |  |  |  | 174,688
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 420,977
Gross amount at which carried at close of period, Total | $ 595,665 |  |  | 595,665
Accumulated depreciation and amortization | $ (55,384) |  |  | (55,384)
Date of construction | Dec. 31, 1989 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 595,665 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 55,384 |  |  |
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 |  |  |  | 19,983
Gross amount at which carried at close of period, Land |  |  |  | 103,741
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 316,014
Gross amount at which carried at close of period, Total | $ 419,755 |  |  | 419,755
Accumulated depreciation and amortization | $ (46,675) |  |  | (46,675)
Date of construction | Dec. 31, 1983 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 419,755 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 46,675 |  |  |
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 |  |  |  | 2,600,000
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 |  |  |  | 366,502
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 |  |  |  | 4,088,118
Gross amount at which carried at close of period, Total | $ 5,496,750 |  |  | 5,496,750
Accumulated depreciation and amortization | (568,211) |  |  | (568,211)
Real Estate: |  |  |  |
Ending balance | 5,496,750 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | 568,211 |  |  |
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, Land |  |  |  | (16,380)
Costs capitalized subsequent to acquisition, Building and Improvements |  |  |  | (36,811)
Gross amount at which carried at close of period, Land |  |  |  | 36,188
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 58,063
Gross amount at which carried at close of period, Total | $ 94,251 |  |  | 94,251
Date of construction | Dec. 31, 1915 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 94,251 |  |  |
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 |  |  |
300 Mission Street [Member] |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances |  |  |  | 234,643
Initial cost to company, Land |  |  |  | 141,097
Initial cost to company, Building and Improvements |  |  |  | 343,819
Costs capitalized subsequent to acquisition, Building and Improvements |  |  |  | 25,390
Gross amount at which carried at close of period, Land |  |  |  | 141,097
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 369,209
Gross amount at which carried at close of period, Total | $ 510,306 |  |  | 510,306
Accumulated depreciation and amortization | $ (28,523) |  |  | (28,523)
Date of construction | Dec. 31, 1968 |  |  |
Date acquired | Dec. 31, 2017 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 510,306 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 28,523 |  |  |
300 Mission Street [Member] | Minimum [Member] |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |
Life on which depreciation in latest income statement is computed | 5 years |  |  |
300 Mission Street [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 |  |  |  | 52,568
Initial cost to company, Building and Improvements |  |  |  | 94,874
Costs capitalized subsequent to acquisition, Land |  |  |  | (16,380)
Costs capitalized subsequent to acquisition, Building and Improvements |  |  |  | (36,811)
Gross amount at which carried at close of period, Land |  |  |  | 36,188
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 58,063
Gross amount at which carried at close of period, Total | $ 94,251 |  |  | 94,251
Real Estate: |  |  |  |
Ending balance | 94,251 |  |  |
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 |  |  |  | 79,718
Gross amount at which carried at close of period, Land |  |  |  | 288,743
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 1,067,732
Gross amount at which carried at close of period, Total | 1,356,475 |  |  | 1,356,475
Accumulated depreciation and amortization | $ (154,942) |  |  | (154,942)
Date of construction | Dec. 31, 1976 |  |  |
Date acquired | Nov. 24, 2014 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 1,356,475 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 154,942 |  |  |
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 |  |  |  | 15,022
Gross amount at which carried at close of period, Land |  |  |  | 127,765
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 391,941
Gross amount at which carried at close of period, Total | $ 519,706 |  |  | 519,706
Accumulated depreciation and amortization | $ (36,430) |  |  | (36,430)
Date of construction | Dec. 31, 1979 |  |  |
Date acquired | Dec. 31, 2016 |  |  |
Real Estate: |  |  |  |
Ending balance | $ 519,706 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 36,430 |  |  |
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 |  |  |
Total San Francisco [Member] |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances |  |  |  | 1,209,643
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 |  |  |  | 120,130
Gross amount at which carried at close of period, Land |  |  |  | 557,605
Gross amount at which carried at close of period, Buildings and Improvements |  |  |  | 1,828,882
Gross amount at which carried at close of period, Total | $ 2,386,487 |  |  | 2,386,487
Accumulated depreciation and amortization | (219,895) |  |  | $ (219,895)
Real Estate: |  |  |  |
Ending balance | 2,386,487 |  |  |
Accumulated Depreciation: |  |  |  |
Ending balance | $ 219,895 |  |  |

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