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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended
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Jun. 30, 2023 AUD ($)
Disclosure of detailed information about leases asset in right of use assets [line items] |
Expense relating to short-term leases for which recognition exemption has been used | $ 6,539
Expense relating to leases of low-value assets for which recognition exemption has been used | $ 5,782
Bottom of range [member] |
Disclosure of detailed information about leases asset in right of use assets [line items] |
Rental Contracts Period | 1 year
Extention Option Rental Contracts Period | 3 months
Top of range [member] |
Disclosure of detailed information about leases asset in right of use assets [line items] |
Rental Contracts Period | 3 years
Extention Option Rental Contracts Period | 1 year
Lease Classification Threshold Amount | $ 12,000

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- Definition The amount of the expense relating to leases of low-value assets accounted for applying paragraph 6 of IFRS 16. This expense shall not include the expense relating to short-term leases of low-value assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_d&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_ExpenseRelatingToLeasesOfLowvalueAssetsForWhichRecognitionExemptionHasBeenUsed
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of the expense relating to short-term leases accounted for applying paragraph 6 of IFRS 16. This expense need not include the expense relating to leases with a lease term of one month or less. Short-term lease is a lease that, at the commencement date, has a lease term of 12 months or less. A lease that contains a purchase option is not a short-term lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_c&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_ExpenseRelatingToShorttermLeasesForWhichRecognitionExemptionHasBeenUsed
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Disclosure of leases included in right of use assets [Line items]. + References No definition available. + Details
Name: | immp_DisclosureOfLeasesIncludedInRightOfUseAssetsLineItems
Namespace Prefix: | immp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Extention Option Rental Contracts Period + References No definition available. + Details
Name: | immp_ExtentionOptionRentalContractsPeriod
Namespace Prefix: | immp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Lease classification threshold amount. + References No definition available. + Details
Name: | immp_LeaseClassificationThresholdAmount
Namespace Prefix: | immp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Rental contracts, period. + References No definition available. + Details
Name: | immp_RentalContractsPeriod
Namespace Prefix: | immp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |