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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2018
Accounting Policies [Abstract] |
Reconciliation of cash, cash equivalents and restricted cash | The following table provides a reconciliation of the cash and cash equivalents and restricted cash reported in the Company's consolidated balance sheets that total to the same amount as reported in the consolidated statements of cash flows (in thousands):
|  | September 30, 2018 |  | December 31, 2017 |  | September 30, 2017 |  | December 31, 2016
Cash and cash equivalents |  | $ | 757,384 |  |  | $ | 657,688 |  |  | $ | 1,912,448 |  |  | $ | 328,744 |
Restricted cash included in deferred expenses and other assets, net(1) |  | 34,974 |  |  | 20,045 |  |  | 21,690 |  |  | 25,883 |
Total cash, cash equivalents and restricted cash reported in the consolidated statements of cash flows |  | $ | 792,358 |  |  | $ | 677,733 |  |  | $ | 1,934,138 |  |  | $ | 354,627 |
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(1) | Restricted cash represents amounts required to be maintained under certain of the Company's debt obligations, loans, leasing, land development, sale and derivative transactions.
Schedule of impact of new accounting standard | The adoption of ASU 2017-05 had the following impact on the Company's consolidated financial statements (in thousands):
|  |  |  | Impact from ASU 2017-05 on January 1, 2018 |  |
|  | December 31, 2017 |  |  | January 1, 2018
Other investments |  | $ | 321,241 |  |  | $ | 75,869 |  |  | $ | 397,110 |
Total assets |  | 4,731,078 |  |  | 75,869 |  |  | 4,806,947 |
Retained earnings (deficit) |  | $ | (2,470,564 | ) |  | $ | 75,869 |  |  | $ | (2,394,695 | )
Total equity |  | 914,249 |  |  | 75,869 |  |  | 990,118 |

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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01.(b)(6)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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