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Employee Retirement Plan	12 Months Ended
Employee Retirement Plan	Apr. 30, 2013
Compensation and Retirement Disclosure [Abstract]
Employee Retirement Plan	Note 15. Employee Retirement Plan The Company maintains 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. The Company can, at its discretion, voluntarily match the participating employees’ contributions not to exceed 6% of each employee’s annual compensation. In fiscal years 2013, 2012 and 2011, the Company contributed $0.3 million, $0.4 million, and $0.4 million, respectively, to the 401(k) Plan.

The entire disclosure for pension and other postretirement benefits.

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