Note 7 - Litigation	3 Months Ended
Mar. 31, 2012
Legal Costs, Policy [Policy Text Block]	7. Litigation On September 16, 2011 and September 29, 2011, two nearly identical shareholder derivative actions were filed in the United States District Court for the Northern District of California and the California Superior Court for Santa Clara County, naming as defendants certain of the Company’s current and former directors and officers and the Company’s compensation advisory firm. The complaints assert claims for, among other things, breach of fiduciary duty in connection with the directors' approval of compensation for the Company's executive officers during 2010. The complaints each seek an award of damages in favor of the Company, equitable relief, costs and attorney's fees. On March 2, 2012, the parties in the state court action stipulated to the dismissal without prejudice of that action. On April 3, 2012, a hearing was held in the United States District Court on the defendants’ motions to dismiss the case. The court has not yet ruled on the motions. The matters are at a preliminary stage at the United States District Court; the defendants have not yet responded to the complaint and no discovery has taken place. In management’s opinion, the resolution of the derivative action filed in the United States District Court is uncertain and estimate of its effect cannot be made on our consolidated financial condition, results of operations or liquidity. The Company and certain of its subsidiaries are parties to actions and proceedings incident to the Company's business in the ordinary course of business, including litigation regarding its intellectual property, challenges to the enforceability or validity of its intellectual property and claims that the Company’s products infringe on the intellectual property rights of others. These proceedings often involve complex questions of fact and law and may require the expenditure of significant funds and the diversion of other resources to prosecute and defend. The Company defends itself vigorously against any such claims. In December 2011, the Company entered into a settlement and license agreement with a third-party company for infringement of the Company’s patent whereby the Company will receive $2 million which will be paid in equal installments of $300,000 in each quarter of 2012 and the remainder will be paid in two equal installments in first two quarters of 2013. For the three months ended March 31, 2012, the Company received the first $300,000 payment which was recorded as a credit to the litigation expenses in the Condensed Consolidated Statements of Operations.

Note 7 - Litigation

3 Months Ended

Mar. 31, 2012

7. Litigation

On September 16, 2011 and September 29, 2011, two nearly identical shareholder derivative actions were filed in the United States District Court for the Northern District of California and the California Superior Court for Santa Clara County, naming as defendants certain of the Company’s current and former directors and officers and the Company’s compensation advisory firm. The complaints assert claims for, among other things, breach of fiduciary duty in connection with the directors' approval of compensation for the Company's executive officers during 2010. The complaints each seek an award of damages in favor of the Company, equitable relief, costs and attorney's fees. On March 2, 2012, the parties in the state court action stipulated to the dismissal without prejudice of that action. On April 3, 2012, a hearing was held in the United States District Court on the defendants’ motions to dismiss the case. The court has not yet ruled on the motions. The matters are at a preliminary stage at the United States District Court; the defendants have not yet responded to the complaint and no discovery has taken place. In management’s opinion, the resolution of the derivative action filed in the United States District Court is uncertain and estimate of its effect cannot be made on our consolidated financial condition, results of operations or liquidity.

The Company and certain of its subsidiaries are parties to actions and proceedings incident to the Company's business in the ordinary course of business, including litigation regarding its intellectual property, challenges to the enforceability or validity of its intellectual property and claims that the Company’s products infringe on the intellectual property rights of others. These proceedings often involve complex questions of fact and law and may require the expenditure of significant funds and the diversion of other resources to prosecute and defend. The Company defends itself vigorously against any such claims. In December 2011, the Company entered into a settlement and license agreement with a third-party company for infringement of the Company’s patent whereby the Company will receive $2 million which will be paid in equal installments of $300,000 in each quarter of 2012 and the remainder will be paid in two equal installments in first two quarters of 2013. For the three months ended March 31, 2012, the Company received the first $300,000 payment which was recorded as a credit to the litigation expenses in the Condensed Consolidated Statements of Operations.

- Definition

Disclosure of accounting policy for legal costs incurred to protect or defend the entity's assets and rights, or to obtain assets, including monetary damages, or to obtain rights.

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