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QUARTERLY FINANCIAL DATA (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Data [Abstract] |
Schedule Of Quarterly Financial Information | The following summarized (unaudited) quarterly financial information presents the results of operations and other data for three-month periods ended March 31, June 30, September 30 and December 31, 2018 and 2017.
|  | First Quarter 2018 |  |  | Second Quarter 2018 |  |  | Third Quarter 2018 |  |  | Fourth Quarter 2018 |
Total Income (Loss) |  | $ | 4,772,682 |  |  | $ | 14,513,797 |  |  | $ | 4,932,679 |  |  | $ | (38,543,348 | )
Total Expenses |  |  | 269,461 |  |  |  | 237,273 |  |  |  | 227,009 |  |  |  | 214,103 |
Expense Waivers |  |  | (59,168 | ) |  |  | (18,291 | ) |  |  | (599 | ) |  |  | (3,584 | )
Net Expenses |  |  | 210,293 |  |  |  | 218,982 |  |  |  | 226,410 |  |  |  | 210,519 |
Net Income (Loss) |  | $ | 4,562,389 |  |  | $ | 14,294,815 |  |  | $ | 4,706,269 |  |  | $ | (38,753,867 | )
Net Income (Loss) per Share |  | $ | 0.95 |  |  | $ | 3.08 |  |  | $ | 1.07 |  |  | $ | (8.10 | )
|  | First Quarter 2017 |  |  | Second Quarter 2017 |  |  | Third Quarter 2017 |  |  | Fourth Quarter 2017 |
Total Income (Loss) |  | $ | (8,301,247 | ) |  | $ | (8,631,948 | ) |  | $ | 15,602,885 |  |  | $ | 17,689,246 |
Total Expenses |  |  | 358,711 |  |  |  | 287,274 |  |  |  | 292,404 |  |  |  | 300,890 |
Expense Waivers |  |  | (120,259 | ) |  |  | (63,219 | ) |  |  | (66,850 | ) |  |  | (81,105 | )
Net Expenses |  |  | 238,452 |  |  |  | 224,055 |  |  |  | 225,554 |  |  |  | 219,785 |
Net Income (Loss) |  | $ | (8,539,699 | ) |  | $ | (8,856,003 | ) |  | $ | 15,377,331 |  |  | $ | 17,469,461 |
Net Income (Loss) per Share |  | $ | (1.20 | ) |  | $ | (1.53 | ) |  | $ | 2.22 |  |  | $ | 2.99 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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