9. Restructuring Charges	12 Months Ended
Apr. 30, 2019
Restructuring Costs [Abstract]
Restructuring Charges	Note 9 – Restructuring Charges In August 2017, we implemented a restructuring plan intended to reduce operating costs and improve cost efficiencies while we pursued strategic options for our research and development assets and focused our efforts on growing our CDMO business. Under this restructuring plan, which we completed in October 2017, we reduced our overall workforce by 57 employees. As a result, during the fiscal quarter ended October 31, 2017, we incurred an aggregate of $1,588 in restructuring costs consisting of termination benefits, including severance, and other employee-related costs, of which $330 related to our discontinued research and development segment and $1,258 related to our contract manufacturing services segment. The restructuring costs associated with our discontinued research and development segment are included in income (loss) from discontinued operations, net of tax, in the accompanying consolidated financial statements for the fiscal year ended April 30, 2018 (Note 10). The restructuring costs associated with our contract manufacturing services segment are included in operating expenses in the accompanying consolidated financial statements for the fiscal year ended April 30, 2018. All restructuring costs were paid in full during fiscal year 2018.

9. Restructuring Charges

12 Months Ended

Apr. 30, 2019

Note 9 – Restructuring Charges

In August 2017, we implemented a restructuring plan intended to reduce operating costs and improve cost efficiencies while we pursued strategic options for our research and development assets and focused our efforts on growing our CDMO business. Under this restructuring plan, which we completed in October 2017, we reduced our overall workforce by 57 employees. As a result, during the fiscal quarter ended October 31, 2017, we incurred an aggregate of $1,588 in restructuring costs consisting of termination benefits, including severance, and other employee-related costs, of which $330 related to our discontinued research and development segment and $1,258 related to our contract manufacturing services segment. The restructuring costs associated with our discontinued research and development segment are included in income (loss) from discontinued operations, net of tax, in the accompanying consolidated financial statements for the fiscal year ended April 30, 2018 (Note 10). The restructuring costs associated with our contract manufacturing services segment are included in operating expenses in the accompanying consolidated financial statements for the fiscal year ended April 30, 2018. All restructuring costs were paid in full during fiscal year 2018.