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Summary of Significant Accounting Policies (Change in Level 3 Liability) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($)
Accounting Policies [Abstract] |
Warrant liability at December 31, 2016 | $ 6,727,409
Increase in fair value of warrant liability | 4,738,753
Warrant liability at December 31, 2017 | $ 11,466,162

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- Definition Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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