XML 60 R50.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Collaboration Agreements,License Agreement and Revenues - Summary of Product Revenue, Net (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | $ 235,309 | $ 176,319 | $ 256,577
Non-key Account Hospital Listing Award [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 0 | 9,300 | 0
Contractual Sales Rebate [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 800 | 6,200 | 100
Product Revenue, Net [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 47,638 | 72,498 | 1,700
Product Revenue, Net [Member] | Direct Sales [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Gross revenue | 13,727 | 89,027 | 2,803
Total revenue | 12,070 | 72,498 | 1,700
Product Revenue, Net [Member] | Direct Sales [Member] | Price Adjustment [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | (982) | 0 | (936)
Product Revenue, Net [Member] | Direct Sales [Member] | Non-key Account Hospital Listing Award [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 95 | (9,325) | 0
Product Revenue, Net [Member] | Direct Sales [Member] | Contractual Sales Rebate [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | (832) | (6,189) | (149)
Product Revenue, Net [Member] | Direct Sales [Member] | Other Discounts and Rebates [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | (21) | (923) | (18)
Product Revenue, Net [Member] | Direct Sales [Member] | Sales Returns [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 83 | (92) | 0
Product Revenue, Net [Member] | Sales To Falikang |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 35,568 | 0 | 0
Gross transaction price | 97,531 | 0 | 0
Product Revenue, Net [Member] | Sales To Falikang | Profit Share |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | (34,759) | 0 | 0
Product Revenue, Net [Member] | Sales To Falikang | Net Transfer Price |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 62,772 | 0 | 0
Product Revenue, Net [Member] | Sales To Falikang | Increase In Deferred Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | $ (27,204) | $ 0 | $ 0

X
- Definition Revenue gross from contract with customer excluding assessed tax. + References No definition available. + Details
Name: | fgen_RevenueGrossFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | fgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Revenue gross transfer price from contract with customer excluding assessed tax. + References No definition available. + Details
Name: | fgen_RevenueGrossTransferPriceFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | fgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_NonKeyAccountHospitalListingAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_ContractualSalesRebateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ProductMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=fgen_DirectSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_PriceAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_OtherDiscountsAndRebatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_SalesReturnsAndAllowancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=fgen_SalesToFalikangMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_ProfitShareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_NetTransferPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=fgen_IncreaseInDeferredRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |