XML 70 R60.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Schedule of Business Acquisition and Fair Value of Net Assets, Compensation Expense Recognized (Details) - 3Dent Acquisition [Member] | Feb. 01, 2021 USD ($)
--- | ---
Restructuring Cost and Reserve [Line Items] |
Fair Value of Purchase | $ 1,161,267
Total Acquired Assets | (593,571)
Total Acquired Liabilities | 117,106
Compensation Expense | 684,802
Quarterly Compensation Expense | $ 171,201

X
- Definition Adjusted fair value. + References No definition available. + Details
Name: | OPTT_AdjustedFairValue
Namespace Prefix: | OPTT_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business comibination compensation expenses recognized. + References No definition available. + Details
Name: | OPTT_BusinessComibinationCompensationExpensesRecognized
Namespace Prefix: | OPTT_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business comibination quarterly compensation expenses recognized. + References No definition available. + Details
Name: | OPTT_BusinessComibinationQuarterlyCompensationExpensesRecognized
Namespace Prefix: | OPTT_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=OPTT_ThreeDentAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |