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Note 4 - Stock-Based Compensation
3 Months Ended
Jul. 27, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

4. STOCK-BASED COMPENSATION


During the three months ended July 27, 2013, options to purchase 3,500 shares of common stock were granted (weighted average exercise price of $6.53 per share), options to purchase 1,400 shares were exercised (weighted average exercise price of $3.05 per share), and options to purchase 3,800 shares were cancelled (weighted average exercise price of $14.41). At July 27, 2013, options to purchase 440,110 shares (weighted average exercise price of $6.79 per share) were outstanding and stock-based awards to purchase 3,006,934 shares of common stock were available for grant.