Note 10 - Litigation	12 Months Ended
Dec. 31, 2011
Legal Costs, Policy [Policy Text Block]	10. 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 February 29, 2012, the plaintiff in the action filed in California Superior Court for Santa Clara County had voluntarily dismissed the action. The matters are at a preliminary stage at the United States District Court; the defendants have moved to dismiss the complaint in the court. In management's opinion, the resolution of the derivative action filed in the United States District Court is uncertain and we are not able to assess whether it will have a material adverse effect 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 asserts its intellectual property rights and vigorously defends itself against any such claims.

Note 10 - Litigation

12 Months Ended

Dec. 31, 2011

10. 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 February 29, 2012, the plaintiff in the action filed in California Superior Court for Santa Clara County had voluntarily dismissed the action. The matters are at a preliminary stage at the United States District Court; the defendants have moved to dismiss the complaint in the court. In management's opinion, the resolution of the derivative action filed in the United States District Court is uncertain and we are not able to assess whether it will have a material adverse effect 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 asserts its intellectual property rights and vigorously defends itself against any such claims.

- 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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