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Stockholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 30, 2017 | Mar. 31, 2017 | Nov. 30, 2016 | Jun. 30, 2016 | Apr. 30, 2015 | Sep. 30, 2014 | Aug. 30, 2014 | Jun. 30, 2010 | Sep. 30, 2004 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2013 | Dec. 31, 2009 | Jun. 16, 2016
Sale of stock common, shares | 30,000 | 200,000 | 412,000 |  |  |  |  |  |  |  |  |  |  |
Common stock at purchase price per share | $ 7.78 | $ 7.85 | $ 6.64 |  |  |  |  |  |  |  |  |  |  |
Proceeds from offering expenses | $ 219 | $ 1,554 | $ 2,692 |  |  |  |  |  |  |  |  |  |  |
Reverse stock split |  |  |  | Company effected a stockholder-approved 1-100 reverse split immediately followed by a 2-for-1 forward split. Any fractional share of common stock resulting from the forward split was rounded up to the nearest whole share. The Company refers to the reverse split and to the forward split, together, as the “reverse/forward split.” Any stockholder who, as of immediately prior to the effective time of the reverse split, held fewer than 100 shares of the Company’s common stock in one account and, subsequent to the reverse split |  |  |  |  |  |  | As of immediately prior to the reverse split/forward split, the Company had 92,439,174 of common stock outstanding, and subsequent to the reverse/forward split, it had 1,848,597 shares of common stock outstanding. Approximately $3,000 was paid to cashed-out stockholders who owned less than 100 shares immediately prior to the reverse split. |  |  |
Fractional share cash for each such share held price per share |  |  |  | $ 0.12 |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  | 2,521,000 | 2,261,000 |  |  | 92,439,174
Paid to cashed out stockholders |  |  |  |  |  |  |  |  |  | $ 3 |  |  |  |
Common stock par value |  |  |  |  |  |  |  |  |  | $ 0.005 | $ 0.005 |  |  |
Stock-based compensation |  |  |  |  |  |  |  |  |  | $ 457 | $ 419 |  |  |
Option exercised during period, value |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant-date fair value per share price |  |  |  |  |  |  |  |  |  | $ 5.87 | $ 6.48 |  |  |
Unamortized compensation expense |  |  |  |  |  |  |  |  |  | $ 383 |  |  |  |
Unamortized compensation expense remaining service period |  |  |  |  |  |  |  |  |  | 1 year 2 months 16 days |  |  |  |
Preferred Stock authorized |  |  |  |  |  |  |  |  |  | 156,000 | 156,000 |  |  |
Preferred stock shares issued |  |  |  |  |  |  |  |  |  | 156,000 | 156,000 |  |  |
Preferred Stock, shares outstanding |  |  |  |  |  |  |  |  |  | 156,000 | 156,000 |  |  |
Payment of dividend |  |  |  |  |  |  |  |  |  | $ 16 | $ 16 |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock authorized |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |  |
Series A Cumulative Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock authorized |  |  |  |  |  |  |  |  |  | 5,000,000 |  |  |  |
Preferred stock shares issued |  |  |  |  |  |  |  |  |  | 156,000 | 156,000 |  |  |
Preferred Stock, shares outstanding |  |  |  |  |  |  |  |  |  | 156,000 | 156,000 |  |  |
Dividends payable per share |  |  |  |  |  |  |  |  |  | $ 0.10 | $ 0.10 |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  |  |  |  |  |  |  |  | $ 1.00 |  |  |  |
Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants issued to purchase number of common stock |  |  |  |  |  |  |  |  |  | 72,000 |  | 72,000 | 60,000 |
Fair value of the warrants |  |  |  |  |  |  |  |  |  |  |  | $ 1,379 | $ 537 |
Risk-free interest rates |  |  |  |  |  |  |  |  |  |  |  | 1.06% | 2.79% |
Dividend yield |  |  |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  | 80.25% | 78.10% |
Term of weighted-average assumptions |  |  |  |  |  |  |  |  |  |  |  | 5 years | 8 years |
2004 Performance Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to issue |  |  |  |  |  |  |  |  | 50,000 |  |  |  |  |
Options outstanding |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |
2010 Amended Performance Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to issue |  |  |  |  |  |  |  | 120,000 |  |  |  |  |  |
Options outstanding |  |  |  |  |  |  |  |  |  | 70,000 |  |  |  |
Incentive plan expiry description |  |  |  |  |  |  |  | The Amended 2010 Plan expires in February 2020. |  |  |  |  |  |
Number of shares available for grant |  |  |  |  |  |  |  |  |  | 108,000 |  |  |  |
2010 Amended Performance Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to issue |  |  |  |  |  |  |  | 120,000 |  |  |  |  |  |
2010 Amended Performance Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to issue |  |  |  |  |  |  |  | 240,000 |  |  |  |  |  |
2014 Inducement Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to issue |  |  |  |  |  |  | 85,000 |  |  |  |  |  |  |
Incentive plan expiry description |  |  |  |  |  |  | The 2014 Plan expires in September 2024. |  |  |  |  |  |  |
2014 Inducement Plan [Member] | Mr Krishnan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Option issued to purchase number of additional common stock |  |  |  |  | 15,000 | 70,000 |  |  |  |  |  |  |  |
2014 Inducement Plan [Member] | First Anniversary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Option expected to vest during period, percentage |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |
2014 Inducement Plan [Member] | 36 Substantially Equal Monthly Installments Thereafter [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Option expected to vest during period, percentage |  |  |  |  | 75.00% |  |  |  |  |  |  |  |  |

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- Definition Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 + Details
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