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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2016
Accounting Policies [Abstract] |
Summarized Unaudited Financial Information for the Equity Method Investments | Summarized unaudited financial data as of September 30, 2016 and December 31, 2015 and for the three and nine months ended September 30, 2016 and 2015, for the Company's equity method investments are shown in the following tables. Summarized unaudited financial data for ZIOPHARM has been included through June 30, 2015 for the nine months ended September 30, 2015 as the Company determined it had significant influence over ZIOPHARM until the Company distributed its investment in ZIOPHARM to shareholders in June 2015.
| September 30, 2016 |  | December 31, 2015
Current assets | $ | 81,049 |  |  | $ | 28,123 |
Non-current assets | 10,992 |  |  | 1,539 |
Total assets | 92,041 |  |  | 29,662 |
Current liabilities | 8,325 |  |  | 6,274 |
Net assets | $ | 83,716 |  |  | $ | 23,388 |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Revenues | $ | 65 |  |  | $ | 330 |  |  | $ | 394 |  |  | $ | 1,480 |
Operating expenses | 18,363 |  |  | 8,687 |  |  | 50,406 |  |  | 118,180 |
Operating loss | (18,298 | ) |  | (8,357 | ) |  | (50,012 | ) |  | (116,700 | )
Other | 75 |  |  | (34 | ) |  | 1,502 |  |  | (31 | )
Net loss | $ | (18,223 | ) |  | $ | (8,391 | ) |  | $ | (48,510 | ) |  | $ | (116,731 | )

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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