XML 70 R59.htm IDEA: XBRL DOCUMENT
v3.20.2

Commitments and Contingencies (Details Narrative) | Mar. 03, 2020 $ / shares | Aug. 28, 2018 USD ($) | Jul. 31, 2020 USD ($) | Jul. 31, 2020 EUR (€) | Apr. 30, 2020 USD ($)
--- | --- | --- | --- | --- | ---
Share price per share | $ / shares | $ 1.00 |  |  |  |
Nasdaq delisting notification description | The Company received a notification from the Nasdaq Stock Market (the "Nasdaq") indicating that the minimum bid price of the Company's common stock has been below $1.00 per share for 30 consecutive business days and as a result, the Company is not in compliance with the minimum bid price requirement for continued listing. The Nasdaq notice has no immediate effect on the listing or trading of the Company's common stock. Under the Nasdaq Listing Rules, the Company has a grace period of 180 calendar days, or until August 31, 2020, in which to regain compliance with the minimum bid price rule. To regain compliance, the closing bid price of the Company's common stock must meet or exceed $1.00 per share for a minimum of ten consecutive business days during this grace period. On April 20, 2020, the Company received a written notice from Nasdaq indicating that, as a result of the tolling of the bid price requirements due to COVID-19, the period within which the Company has to regain compliance was extended from August 31, 2020 to November 13, 2020. |  |  |  |
Selling, General and Administrative [Member] | Tax Authority, Spain [Member] |  |  |  |  |
Income tax examination, penalties and interest accrued |  |  | $ 331,000 |  | $ 177,000
Selling, General and Administrative [Member] | Tax Authority, Spain [Member] | Recorded Additional Penalty [Member] |  |  |  |  |
Income tax examination, penalties and interest accrued |  |  | $ 154,000 |  |
Selling, General and Administrative [Member] | Tax Authority, Spain [Member] | Euro [Member] |  |  |  |  |
Income tax examination, penalties and interest accrued | € |  |  |  | € 279,870 |
Charles F. Dunleavy [Member] |  |  |  |  |
Damages sought value |  | $ 5,000,000 |  |  |

X
- Definition Nasdaq delisting notification description. + References No definition available. + Details
Name: | OPTT_NasdaqDelistingNotificationDescription
Namespace Prefix: | OPTT_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityNameAxis=us-gaap_TaxAuthoritySpainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=OPTT_RecordedAdditionalPenaltyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=OPTT_EURMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=OPTT_CharlesFDunleavyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |