XML 30 R50.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Major Customers, Partnerships and Strategic Alliances - CHDI Foundation, Inc. - Additional Information (Detail) (CHDI Foundation, Inc. [Member], USD $) In Millions, unless otherwise specified | 1 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
CHDI Foundation, Inc. [Member] |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |
Funds due under agreement | $ 1.3 |  |  |
Agreement date | Apr. 30, 2011 |  |  |
Agreement to receive | 1 year |  |  |
Contractual agreement termination date |  | Aug. 30, 2012 |  |
Funds due under agreement as per amendment |  |  | 2.1 |
Collaboration agreement related costs and expenses |  |  | 1.1 | 1.1
Revenues under the agreement |  |  | $ 1.1 | $ 1.2

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 Agreement to receive. + References No definition available. + Details
Name: | sgmo_AgreementToReceive
Namespace Prefix: | sgmo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Collaboration agreement related costs and expenses. + References No definition available. + Details
Name: | sgmo_CollaborationAgreementRelatedCostsAndExpenses
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contractual agreement termination date. + References No definition available. + Details
Name: | sgmo_ContractualAgreementTerminationDate
Namespace Prefix: | sgmo_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Funds due under agreement. + References No definition available. + Details
Name: | sgmo_FundsDueUnderAgreement
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Post amendment funds due under agreement. + References No definition available. + Details
Name: | sgmo_PostAmendmentFundsDueUnderAgreement
Namespace Prefix: | sgmo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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