Commitments and Contingencies	3 Months Ended
Jul. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	(14) Commitments and Contingencies Spain Income Tax Audit The Company underwent an income tax audit in Spain for the period from 2011 to 2014, when its Spanish branch was closed. On July 30, 2018, the Spanish tax inspector concluded that although there was no tax owed in light of losses reported, the Company’s Spanish branch owed penalties for failure to properly account for the income associated with the funding grant. During the year ended April 30, 2022, the Company received notice from the Spanish Central Economic and Administrative Tribunal (“Spanish Tax Administration”) that it agreed with the inspector and ruled that the Company owes the full amount of the penalty in the amount of €279,870 or approximately $331,000. On January 25, 2021, the Company paid the Spanish Tax Administration €279,870. Notwithstanding that payment, on April 30, 2022, the Company filed its appeal of the decision of the Central Court to the Spanish National Court. General Legal Matters From time to time, the Company is involved in legal and administrative proceedings and claims of various types. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in a liability and the amounts of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss to the extent necessary to make the consolidated financial statements not misleading. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

Commitments and Contingencies

3 Months Ended

Jul. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

(14) Commitments and Contingencies

Spain Income Tax Audit

The Company underwent an income tax audit in Spain for the period from 2011 to 2014, when its Spanish branch was closed. On July 30, 2018, the Spanish tax inspector concluded that although there was no tax owed in light of losses reported, the Company’s Spanish branch owed penalties for failure to properly account for the income associated with the funding grant. During the year ended April 30, 2022, the Company received notice from the Spanish Central Economic and Administrative Tribunal (“Spanish Tax Administration”) that it agreed with the inspector and ruled that the Company owes the full amount of the penalty in the amount of €279,870 or approximately $331,000. On January 25, 2021, the Company paid the Spanish Tax Administration €279,870. Notwithstanding that payment, on April 30, 2022, the Company filed its appeal of the decision of the Central Court to the Spanish National Court.

General Legal Matters

From time to time, the Company is involved in legal and administrative proceedings and claims of various types. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in a liability and the amounts of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss to the extent necessary to make the consolidated financial statements not misleading. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.