XML 137 R75.htm IDEA: XBRL DOCUMENT
v3.22.0.1

RELATED PARTY TRANSACTION (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Related Party Transaction [Line Items] |  |  |
Payments to acquire additional interest in subsidiaries | $ 119 | $ 704 | $ 262
Sangamo France | Share Purchase Agreement and Tender Offer Agreement |  |  |
Related Party Transaction [Line Items] |  |  |
Payments to acquire additional interest in subsidiaries |  | $ 1,100 |
Former Executive of TxCell | Sangamo France | Share Purchase Agreement and Tender Offer Agreement |  |  |
Related Party Transaction [Line Items] |  |  |
Number of ordinary shares acquired (in shares) | 0 | 185,400 |
Payments to acquire additional interest in subsidiaries |  | $ 400 |

X
- Definition Business acquisition, number of shares acquired. + References No definition available. + Details
Name: | sgmo_BusinessAcquisitionNumberOfSharesAcquired
Namespace Prefix: | sgmo_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of noncontrolling interest during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries
Namespace Prefix: | us-gaap_
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_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=sgmo_SangamoFranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_CounterpartyNameAxis=sgmo_FormerExecutiveOfSangamoFranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |