XML 39 R29.htm IDEA: XBRL DOCUMENT
v3.23.1

OPERATING LEASE (Narrative) (Details) - USD ($) | 6 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Incremental borrowing rate | 5.00% |
Accretion expense | $ 4,294 | $ 7,410
South San Francisco Office |  |
Remaining lease term | 14 months |
Houston Office |  |
Remaining lease term | 4 months |
Financing costs |  |
Accretion expense | $ 4,294 | $ 7,410

X
- Definition The amount of accretion expense on operating lease liabilities. + References No definition available. + Details
Name: | epix_OperatingLeaseLiabilitiesAccretionExpenses
Namespace Prefix: | epix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Discount rate used by lessee to determine present value of operating lease payments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseRemainingLeaseTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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

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

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