XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Schedule of Property, Plant and Equipment, Useful Life (Details) | Jan. 31, 2024
--- | ---
Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 5 years
Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 7 years
Computer Equipment & Software [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 3 years
Office Furniture & Fixtures [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 3 years
Office Furniture & Fixtures [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 7 years
Leasehold Improvements [Member] |
Property, Plant and Equipment [Line Items] |
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] | Useful Life, Lease Term [Member]
Leased Power Buoys Assets [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 10 years
Leased WAM-V Assets [Member] |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life (Year) | 10 years

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Indicates description of term of useful life for property, plant, and equipment when not stated as numeric value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 35 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482190/360-10-35-3 + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLifeDescriptionOfTermExtensibleEnumeration
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=OPTT_ComputerEquipmentAndSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=OPTT_OfficeFurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=OPTT_LeasedPowerBuoysAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=OPTT_LeasedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |