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Deferred Costs, Acquired Lease Intangibles and Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of Deferred Costs, Net | Deferred costs, net, consisted of the following at December 31, 2017 and 2016 (amounts in thousands):
| 2017 |  | 2016
Leasing costs | $ | 164,751 |  |  | $ | 140,325 |
Acquired in-place lease value and deferred leasing costs | 237,364 |  |  | 253,113 |
Acquired above-market leases | 67,415 |  |  | 74,770 |
| 469,530 |  |  | 468,208 |
Less: accumulated amortization | (215,102 | ) |  | (195,617 | )
Total deferred costs, net, excluding net deferred financing costs | $ | 254,428 |  |  | $ | 272,591 |
Deferred financing costs, net, consisted of the following at December 31, 2017 and 2016 (amounts in thousands):
| 2017 |  | 2016
Financing costs | $ | 24,446 |  |  | $ | 23,145 |
Less: accumulated amortization | (7,039 | ) |  | (12,241 | )
Total deferred financing costs, net | $ | 17,407 |  |  | $ | 10,904 |
Schedule of Amortizing Acquired Intangible Assets and Liabilities | Amortizing acquired intangible assets and liabilities consisted of the following at December 31, 2017 and 2016 (amounts in thousands):
| 2017 |  | 2016
Acquired below-market ground leases | $ | 396,916 |  |  | $ | 396,916 |
Less: accumulated amortization | (28,687 | ) |  | (20,856 | )
Acquired below-market ground leases, net | $ | 368,229 |  |  | $ | 376,060 |
| 2017 |  | 2016
Acquired below-market leases | $ | (132,026 | ) |  | $ | (135,026 | )
Less: accumulated amortization | 65,979 |  |  | 52,726 |
Acquired below-market leases, net | $ | (66,047 | ) |  | $ | (82,300 | )
Schedule of Future Amortization Expense and Rental Revenue from Acquired Intangible Assets | We expect to recognize amortization expense and rental revenue from the acquired intangible assets and liabilities as follows (amounts in thousands):
For the year ending: | Future Ground Rent Amortization |  | Future Amortization Expense |  | Future Rental Revenue
2018 | $ | 7,831 |  |  | $ | 18,650 |  |  | $ | 6,442 |
2019 | 7,831 |  |  | 15,996 |  |  | 6,689 |
2020 | 7,831 |  |  | 13,046 |  |  | 3,559 |
2021 | 7,831 |  |  | 11,302 |  |  | 2,857 |
2022 | 7,831 |  |  | 10,485 |  |  | 3,175 |
Thereafter | 329,074 |  |  | 41,549 |  |  | 12,690 |
| $ | 368,229 |  |  | $ | 111,028 |  |  | $ | 35,412 |

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- Definition Schedule of Future Amortization Expense and Rental Revenue from Acquired Intangible Assets [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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