Employee Retirement Plan	12 Months Ended
Employee Retirement Plan	Apr. 30, 2014
Employee Retirement Plan [Abstract]
Employee Retirement Plan	Note 12. Employee Retirement Plan We maintain a 401(k) profit sharing plan (the “401(k) Plan”). Eligible employees may contribute up to 100% of their pre-tax annual compensation to the 401(k) Plan, subject to certain statutory limitations. We can, at our discretion, voluntarily match the participating employees’ contributions not to exceed 6% of each employee’s annual compensation. In fiscal years 2014, 2013 and 2012, we contributed $0.3 million, $0.3 million, and $0.4 million, respectively, to the 401(k) Plan.

The entire disclosure for pension and other postretirement benefits.