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Defined Contribution Plans
12 Months Ended
Apr. 30, 2018
Compensation And Retirement Disclosure [Abstract]  
Defined Contribution Plans

Note 10. Defined Contribution Plans

Participation in a personal pension plan is available to all U.K. based employees of the Company upon commencement of their employment. Employer contributions are made in accordance with the terms and conditions of the employment contract. Employees may contribute in accordance with the prevailing statutory limitations. Employees of the U.S. parent company are eligible to participate in the Company's 401(k) Plan. The Company will match up to 4% of employee contributions to the Plan. Total employer contributions to both plans for the years ended April 30, 2018, 2017, and 2016 were $219,000, $90,000 and $70,000 respectively.