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v3.3.1.900

Commitment and Contingencies - Additional Information (Detail) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2013 USD ($) ft² | Sep. 30, 2006 USD ($) ft² $ / ft² | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Jun. 30, 2012 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Restricted cash |  |  | $ 7,254 | $ 7,254 |  |
FibroGen, Inc. [Member] |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Land subject to leases | ft² |  | 234,249 |  |  |  |
Initial term of lease contract |  | 15 years |  |  |  |
Restricted cash |  | $ 7,254 |  |  |  |
Description of lessee leasing arrangements, operating leases |  |  | The agreement included an expansion option to occupy part of an adjacent building within 31 months of the lease commencement date of November 20, 2008. |  |  |
Lease incentive receivable from land lord through expansion option not used |  |  |  |  |  | $ 5,000
Percentage of construction costs for tenant improvement |  | 60.00% |  |  |  |
Tenant improvement price per square foot of rental space | $ / ft² |  | 140.50 |  |  |  |
Tenant improvements allowance of rental space |  | $ 32,500 |  |  |  |
Cost of construction capitalized |  | 50,800 |  |  |  |
Reimbursements from landlord for tenant improvements |  | $ 32,500 |  |  |  |
FibroGen, Inc. [Member] | South San Francisco [Member] |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Land subject to sublease | ft² |  | 106,000 |  |  |  |
Lease and sublease termination date |  | Feb. 28, 2015 |  |  |  |
FibroGen China [Member] |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Land subject to leases | ft² | 4,820 |  |  |  |  |
Initial term of lease contract | 8 years |  |  |  |  |
Percentage of construction costs for tenant improvement | 100.00% |  |  |  |  |
Cost of construction capitalized | $ 3,100 |  |  |  |  |
Reimbursements from landlord for tenant improvements | $ 500 |  |  |  |  |
Lease starting date | Feb. 01, 2013 |  |  |  |  |
Rent expenses for leased facilities |  |  | $ 2,700 | 2,900 | $ 3,000 |
Sublease income received |  |  | $ 3,400 | $ 5,000 | $ 4,500 |

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- Definition Land subject to ground sublease. + References No definition available. + Details
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- Definition Percentage responsibility of construction costs for tenant improvements. + References No definition available. + Details
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- Definition The expense charged against earnings for the periodic recognition of capitalized leases. This element may apply to energy companies that lease mineral producing properties and to other enterprises that capitalize property, plant, or equipment obtained through capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45031-112735 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition A general description of the nature of the existing leasing arrangements of a lessee for all operating leases including, but not limited to: (1) rental escalation clauses; (2) renewal or purchase options; (3) guarantees or indemnities, if any, (4) restrictions imposed by lease arrangements; (5) unusual provisions or conditions; (6) contingent rentals, if any; and (7) lease expiration dates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 + Details
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- Definition This item represents a receivable for an incentive or inducement contractually stipulated between parties to a lease whereby the lessor has committed to provide the entity (lessee) with a cash payment as inducement to enter the lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39927-112707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 20 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=7501307&loc=d3e89293-111693 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 20 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=7501307&loc=d3e89298-111693 + Details
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- Definition Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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- Definition Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Definition In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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