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Related Party Transactions	12 Months Ended
Related Party Transactions	Apr. 30, 2017
Related Party Transactions
Related Party Transactions	17. Related Party Transactions Pursuant to a consulting agreement, the Company paid a board member approximately $80,000, $96,000 and $96,000 for fiscal years ended April 30, 2017, 2016 and 2015, respectively, for consulting services independent of his board service.