XML 83 R51.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Major Customers, Partnerships and Strategic Alliances - Juvenile Diabetes Research Foundation International - Additional Information (Detail) (Juvenile Diabetes Research Foundation International [Member], USD $) In Millions, unless otherwise specified | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2012 | Jan. 31, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Oct. 31, 2006
Juvenile Diabetes Research Foundation International [Member] |  |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |  |
Agreement date |  |  |  |  | Oct. 31, 2006
Grant funding amount maximum under amended agreement |  | $ 3.0 |  |  |
Received for work performed under agreement | 0.8 |  |  |  |
Revenues under the agreement |  |  | $ 0.8 | $ 0.5 |

X
- Definition Agreement date. + References No definition available. + Details
Name: | sgmo_AgreementDate
Namespace Prefix: | sgmo_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | instant

X
- Definition Grant funding amount maximum under amended agreement. + References No definition available. + Details
Name: | sgmo_GrantFundingAmountMaximumUnderAmendedAgreement
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds received for work performed under agreement. + References No definition available. + Details
Name: | sgmo_ProceedsReceivedForWorkPerformedUnderAgreement
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Research grant revenue. + References No definition available. + Details
Name: | sgmo_ResearchGrantRevenue
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