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Commitments and Contingencies (Details Narrative) | Oct. 09, 2023 | Jan. 25, 2021 EUR (€) | Apr. 30, 2022 USD ($) | Apr. 30, 2022 EUR (€)
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Operating Loss Carryforwards [Line Items] |  |  |  |
Description of litigation and allegations and cliam | prevent the Company from rejecting the purported nominating notice that Paragon submitted to the Company on August 25, 2023 to notify the Company of its intention to nominate a majority slate of nominees at the 2023 Annual Meeting (the “Purported Nominating Notice”), and (ii) require the Company to approve Paragon’s request for an exemption from OPT’s Section 382 Tax Benefits Preservation Plan so that Paragon could purchase up to 19.9% of the Company’s common stock without triggering the dilution that would otherwise apply to the holder of 4.99% or more of the Company’s common stock |  |  |
Tax Authority, Spain [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Income tax penalties |  |  | $ 331,000 | € 279,870
Payment of tax on damages |  | € 279,870 |  |

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