| **Note 10 - Restructuring**      | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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| **Subsequent Events [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Subsequent Events [Text Block]   | **10.          RESTRUCTURING**

On May 2, 2013, the Company's Board of Directors approved a restructuring plan to reduce operating costs. As a result, the Company reduced the size of its workforce by 20 positions and recorded a charge of $0.6 million in severance pay and benefits expense. As of September 30, 2013 the remaining liability was approximately $60 thousand and the Company expects that this will be paid in the fourth quarter of 2013. Also in the quarter ended June 30, 2013 the Company incurred a charge of approximately $0.4 million associated with modifications of equity awards for the affected employees that were outstanding on their termination date. |

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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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