XML 21 R30.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Major Customers, Partnerships and Strategic Alliances - Agreement with Sigma-Aldrich Corporation - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Oct. 31, 2009 Sigma-Aldrich Corporation [Member] | Jul. 31, 2007 Sigma-Aldrich Corporation [Member] | Oct. 31, 2009 Sigma-Aldrich Corporation [Member] Upfront license fee [Member] | Sep. 30, 2014 Sigma-Aldrich Corporation [Member] License agreement terms [Member] | Sep. 30, 2013 Sigma-Aldrich Corporation [Member] License agreement terms [Member] | Sep. 30, 2014 Sigma-Aldrich Corporation [Member] License agreement terms [Member] | Sep. 30, 2013 Sigma-Aldrich Corporation [Member] License agreement terms [Member] | Oct. 31, 2009 Sigma-Aldrich Corporation [Member] License agreement terms [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Research program to develop laboratory research reagents |  |  |  |  |  | 3 years |  |  |  |  |  |
Upfront license fee |  |  |  |  | $ 20,000,000 |  | $ 15,100,000 |  |  |  |  |
Common stock, valued |  |  |  |  | 4,900,000 |  |  |  |  |  |  |
Public offering, common stock shares issued |  |  |  |  | 636,133 |  |  |  |  |  |  |
Royalty revenues expected to be received |  |  |  |  |  |  |  |  |  |  |  | 5,000,000
Reduced royalty rate |  |  |  |  | 10.50% |  |  |  |  |  |  |
Funding available under the amended agreement |  |  |  |  | 25,000,000 |  |  |  |  |  |  |
Collaboration agreement related costs and expenses | $ 16,290,000 | $ 8,703,000 | $ 41,753,000 | $ 26,201,000 |  |  |  | $ 0 | $ 100,000 | $ 100,000 | $ 100,000 |

X
- Definition Additional milestone receivable under agreement. + References No definition available. + Details
Name: | sgmo_AdditionalMilestoneReceivableUnderAgreement
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial research term of agreement. + References No definition available. + Details
Name: | sgmo_InitialResearchTermOfAgreement
Namespace Prefix: | sgmo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reduced royalty rate. + References No definition available. + Details
Name: | sgmo_ReducedRoyaltyRate
Namespace Prefix: | sgmo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Royalty revenues expected to be received. + References No definition available. + Details
Name: | sgmo_RoyaltyRevenuesExpectedToBeReceived
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Upfront license fee. + References No definition available. + Details
Name: | sgmo_UpfrontLicenseFee
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
Name: | us-gaap_ResearchAndDevelopmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration