XML 141 R133.htm IDEA: XBRL DOCUMENT
v3.25.3

Share-Based Payments - Additional Information (Detail) | 12 Months Ended
--- | ---
Jun. 30, 2025 shares $ / shares | Jun. 30, 2024 shares $ / shares | Jun. 30, 2023 shares $ / shares | Jun. 30, 2016
Disclosure of other equity instruments [line items] |  |  |  |
Options granted | 0 | 0 |  |
Performance Rights Issued to Non Executive Directors [member] | Share consolidation adjustment [member] |  |  |  |
Disclosure of other equity instruments [line items] |  |  |  |
Weighted average share price on the exercising date | $ 0.332 | $ 0.285 | $ 0.28 |
Equity incentive plan [member] |  |  |  |
Disclosure of other equity instruments [line items] |  |  |  |
Options granted | shares | 0 | 0 | 0 |
Weighted average remaining contractual life of performance rights outstanding | 3 years 8 months 8 days |  |  |
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement | $ 0 |  |  |
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] |  |  |  |
Disclosure of other equity instruments [line items] |  |  |  |
Weighted average share price on the exercising date | $ 0.284 | $ 0.285 | $ 0.24 |
Russell Howard [Member] |  |  |  |
Disclosure of other equity instruments [line items] |  |  |  |
Weighted average remaining contractual life of performance rights outstanding |  |  | 3 years 1 month 17 days | 1 month 6 days
Exercise price |  |  | $ 0 |

X
- Definition The number of share options granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_ii&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 31 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_ii&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 31 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_ii&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average exercise price of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement2019
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average share price at the date of exercise for share options that are exercised in a share-based payment arrangement. [Refer: Types of share-based payment arrangements [domain]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_c&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_WeightedAverageExercisePriceOfShareOptionsInSharebasedPaymentArrangementExercisedDuringPeriodAtDateOfExercise2019
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average share price. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_c&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_WeightedAverageSharePrice2019
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items of other equity instruments. + References No definition available. + Details
Name: | immp_DisclosureOfOtherEquityInstrumentsLineItems
Namespace Prefix: | immp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation, Weighted Average Remaining Contractual Life + References No definition available. + Details
Name: | immp_SharebasedCompensationWeightedAverageRemainingContractualLife
Namespace Prefix: | immp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=immp_PerformanceRightsIssuedToNonexecutiveDirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | immp_ShareConsolidationAdjustmentAxis=immp_ShareConsolidationAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | immp_PlanName1Axis=immp_EquityIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=immp_ShortTermIncentivesAndLongTermIncentivesPerformanceRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_RussellHowardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |