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Noncontrolling Interests noncontrolling interests—property partnerships table (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Noncontrolling Interest [Line Items] |  |  |  |
Beginning Balance | $ 1,530,647,000 |  |  |
Capital contributions | 161,585,000 |  | $ 11,951,000 | $ 2,705,000
Dissolution |  |  |  | (4,082,000)
Net income (loss) | 47,832,000 |  | (2,068,000) | 149,855,000
Accumulated other comprehensive loss | (1,922,000) |  | (5,256,000) | (2,982,000)
Ending Balance | 1,683,760,000 |  | 1,530,647,000 |
Property Partnerships Member |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Beginning Balance | 1,530,647,000 |  | 1,574,400,000 | 1,602,467,000
Capital contributions | 161,585,000 | [1] | 10,756,000 | 3,758,000
Dissolution |  |  |  | (4,082,000)
Net income (loss) | 47,832,000 |  | (2,068,000) | 144,734,000
Accumulated other comprehensive loss | (2,128,000) |  | (877,000) | (2,428,000)
Distributions | (54,176,000) |  | (51,564,000) | (170,049,000)
Ending Balance | 1,683,760,000 |  | $ 1,530,647,000 | $ 1,574,400,000
767 Fifth Avenue (the general motors building) [Member] | Property Partnerships Member |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Ending Balance | $ 109,576 |  |  |
[1] | Includes the contribution of the remaining unpaid principal balance of the members’ notes payable totaling $109,576 to equity in the consolidated entity that owns 767 Fifth Avenue (the General Motors Building).

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- Definition Amount after tax of income (loss) attributable to nonredeemable noncontrolling partner of a limited partnership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.19) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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