XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.23.2

Revenue Interest Financing Liability - Schedule of Total Revenue Interest Financing Liability (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended | 14 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2023
Contract with Customer, Liability [Abstract] |  |  |  |
Proceeds from the Revenue Interest Financing Agreement |  | $ 100,000 | $ 100,000 |
Less: transaction costs |  | (4,554) | $ (4,600) |
Plus: interest expense | $ 5,400 | 10,600 |  | $ 24,629
Ending liability balance | $ 120,075 | $ 120,075 |  | $ 120,075

X
- Definition Gross proceeds from revenue interest financing agreement. + References No definition available. + Details
Name: | phat_GrossProceedsFromRevenueInterestFinancingAgreement
Namespace Prefix: | phat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Interest expense related to revenue interest financing liability + References No definition available. + Details
Name: | phat_InterestExpenseRelatedToRevenueInterestFinancingLiability
Namespace Prefix: | phat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Payment of transaction costs. + References No definition available. + Details
Name: | phat_PaymentOfTransactionCosts
Namespace Prefix: | phat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Revenue interest financing liability. + References No definition available. + Details
Name: | phat_RevenueInterestFinancingLiability
Namespace Prefix: | phat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_ContractWithCustomerLiabilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration