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Stock-Based Compensation (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Stock-Based Compensation (Textual) |  |  |
Share compensation expense | $ 72,000 | $ 255,000 | $ 1,075,000
Weighted average grant date fair value |  | $ 0.67 | $ 1.24
Options granted to purchase of common stock to employee |  |  | 90,000
Options granted to purchase of common stock to board members |  | 25,000 | 515,000
Stock based compensation options granted to purchase of common stock to employee fair value |  | $ 17,000 | $ 800,000
Proceeds from exercise of warrants |  |  |
Term of stock options description | Stock options granted under the 2006 and 2015 Plans are exercisable over a maximum term of ten years from the date of grant, vest in various installments over a one to four-year period and have exercise prices reflecting the market value of the shares of common stock on the date of grant. |  |
Swedish employees [Member] |  |  |
Stock-Based Compensation (Textual) |  |  |
Number of shares, options granted |  |  | 265,000
Stock Options [Member] |  |  |
Stock-Based Compensation (Textual) |  |  |
Number of shares, options granted |  | 25,000 | 605,000
Share compensation expense | $ 72,000 | $ 255,000 | $ 1,075,000
Weighted average grant date fair value | $ 4.21 |  |
Vesting period |  | 1 year 1 month 6 days |
2015 Plan [Member] | Stock Options [Member] |  |  |
Stock-Based Compensation (Textual) |  |  |
Number of shares, options granted | 0 |  |
Aggregate shares of common stock, shares |  |  | 2,100,000
Warrant [Member] |  |  |
Stock-Based Compensation (Textual) |  |  |
Number of shares, options granted |  | 4,313,676 |
Weighted average grant date fair value | $ 0.62 |  |
Vesting period |  | 1 year 1 month 6 days |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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