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Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract] |
Cash and Cash Equivalents and Restricted Cash | The following table summarizes the fair value of our cash and cash equivalents held in our current investment portfolio:
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
June 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 1,210,422 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,210,422 |
Cash equivalents |  |  | 1,238,339 |  |  |  | — |  |  |  | — |  |  |  | 1,238,339 |
Total cash and cash equivalents |  | $ | 2,448,761 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,448,761 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 830,190 |  |  | $ | — |  |  | $ | — |  |  | $ | 830,190 |
Cash equivalents |  |  | 11,280,375 |  |  |  | — |  |  |  | — |  |  |  | 11,280,375 |
Restricted cash (money market accounts) |  |  | 2,422,500 |  |  |  | — |  |  |  | — |  |  |  | 2,422,500 |
Total cash and cash equivalents |  | $ | 14,533,065 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,533,065 |

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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