| **Note 11. Subsequent Event**  | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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| Subsequent Events [Text Block] | 11.                SUBSEQUENT      EVENTOn May 2, 2013,      the Company's Board of Directors approved a restructuring      plan to reduce operating costs while maintaining its focus on      strategic initiatives. The Company reduced the size of its      workforce by 20 positions. The reductions were essentially      completed prior to the filing of this Form 10-Q and the      Company expects to incur restructuring charges of      approximately $0.95 million in the second quarter in      connection with this plan. The restructuring charges consist      of approximately $0.6 million in severance pay and benefits      expense and approximately $0.35 million in charges associated      with modifications of equity awards outstanding on their      termination date. These estimated costs are subject to a      number of assumptions and actual results may differ from      these estimates. |

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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.
+ Details**Name:**us-gaap_SubsequentEventsTextBlock**Namespace Prefix:**us-gaap_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |