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| **Subsequent Events [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Subsequent Events [Text Block]   | 16. Subsequent EventDuring the first quarter of 2014, we established a $150 million shelf registration statement (inclusive of approximately $31.7 million of availability under a superseded registration) which we used for our recent underwritten public offering of 8.75 million shares of common stock at a public offering price of $4.60 per share, resulting in net proceeds of approximately $37.5 million.  |

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| - Definition
The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.
+ References
No definition available.
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