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Subsequent Events	6 Months Ended
Subsequent Events	Apr. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On May 20, 2021, the Company learned of a credible potential cybersecurity threat to its information technology system (“IT System”). Upon learning of the cybersecurity threat, the Company launched an investigation and undertook immediate action in accordance with its cybersecurity response plan, including employing containment protocols to mitigate the impact of the potential threat, engaging internal and third-party information technology security and forensics experts to assess any impact on the Company’s IT System, and utilizing additional security measures to help safeguard the integrity of its IT System’s infrastructure and data contained therein. To date, the Company’s IT System continues to be fully operational. On May 31, 2021, the Company received a claim that certain data had been extracted from the Company’s IT System. The measures described above are ongoing as the Company, with the assistance of third-party experts, continues to investigate and address the scope and impact of the cybersecurity incident. Law enforcement is aware of the cybersecurity incident.