XML 14 R33.htm IDEA: XBRL DOCUMENT v3.20.1
Nature of Business and Summary of Significant Accounting Policies - Schedule of Future Amortization of Intangible Assets (Details)
Apr. 30, 2019
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
2020 $ 123,000
2021 123,000
2022 123,000
2023 122,000
2024 121,000
Thereafter 1,028,000
Finite-Lived Intangible Assets, Net $ 1,640,000