XML 31 R22.htm IDEA: XBRL DOCUMENT
v3.25.1

Product Development Obligations | 12 Months Ended
--- | ---
Dec. 31, 2024
Debt Disclosure [Abstract] |
Product Development Obligations | 11. Product Development Obligations The Technology Development Center of the Republic of Finland (“TEKES”) product development obligations consist of 11 separate advances (each in the form of a note agreement) received by FibroGen Europe between 1996 and 2008 from TEKES. These advances are granted on a project-by-project basis to fund various product development efforts undertaken by FibroGen Europe only. Each separate note is denominated in EUR and bears interest (not compounded) calculated as one percentage point less than the Bank of Finland rate in effect at the time of the note, but no less than 3.0%. If the research work funded by TEKES does not result in an economically profitable business or does not meet its technological objectives, TEKES may, on application from FibroGen Europe, forgive each of these loans, including accrued interest, either in full or in part. As of December 31, 2024 and 2023, the Company had U.S. Dollar equivalent of $9.8 million and $10.4 million of principal outstanding, respectively, and $7.2 million and $7.3 million of interest accrued, respectively, which were presented in the product development obligations line on the consolidated balance sheets. The Company is not a guarantor of these loans, and these loans are not repayable by FibroGen Europe until it has distributable funds.

X
- Definition Product development obligation disclosure. + References No definition available. + Details
Name: | fgen_ProductDevelopmentObligationsDisclosureTextBlock
Namespace Prefix: | fgen_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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