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Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 28, 2018 | Sep. 27, 2018 | Aug. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Nov. 23, 2018 | Mar. 31, 2009
Stockholders Equity (Textual) |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  | 10,000,000 | 10,000,000 |  |
Net proceeds from issuance of common stock |  |  |  | $ 4,620 | $ 79,079 |  |
Common stock, Description |  |  |  | We have issued or reserved 27,305 more than our available shares of authorized common stock, even though a total of 333,334 warrants cannot be legally exercised. We automatically come into compliance on April 26, 2019, when 44,300 stock options are cancelled because their original issuance terms is reached and we anticipate proposing an increase in our authorized common stock at our 2019 Annual Meeting of Stockholders. |  |  |
Warrant agreement, description |  |  |  | Under the terms of the prefunded warrants, the warrant holder prepaid $9.90 of the original $10.00 warrant per share exercise price at the time of issuance of the warrant. The remaining $0.10 exercise price is required to be paid in full prior to the issuance of any common stock under the terms of the prefunded warrant agreement. |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |
Preferred stock conversion ratio per share of common stock |  |  |  |  |  | 132 | 132.07
Preferred stock, liquidation preference |  |  |  | $ 0.001 | $ 0.001 |  |
Preferred stock voting rights description |  |  |  | The holders of shares of Series B Preferred stock have one vote for each share of Series B Preferred stock held by them. |  |  |
Preferred stock conversion description |  |  |  | Each share of Series B Preferred stock was convertible into one share of our common stock. |  |  |
Securities Purchase Agreement [Member] |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |
Shares price per share | $ 1.60 |  | $ 10.00 |  |  |  |
Warrants issued to purchase shares of common stock |  |  | 9,750,000 |  |  |  |
Aggregate shares of common stock, shares |  |  |  | 2,000,000 |  |  |
Issuance of common stock, shares | 2,940,767 |  | 975,000 |  |  |  |
Net proceeds from issuance of common stock | $ 4,600 |  | $ 9,100 |  |  |  |
Price per share |  |  | $ 20.00 |  |  |  |
Securities Purchase Agreement [Member] | Mr. Lindell and Mr. Rosberg [Member] |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |
Beneficial percentage of common stock |  |  |  | 19.00% |  |  |
Common Stock [Member] |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |
Issuance of common stock, shares |  |  |  | 2,941 | 975 |  |
Common stock, Description |  | The Company also filed a certificate of second amendment to its restated certificate of incorporation with the state of Delaware to reduce the number of authorized shares of common stock from 100,000,000 to 10,000,000 shares |  |  |  |  |

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