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VENDOR PAYMENT ARRANGEMENT (Details) $ in Millions	6 Months Ended
	Jun. 30, 2025 USD ($)
Payables and Accruals [Abstract]
Payment arrangement period	6 months
Advance reservation fees	$ 3.3

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- Definition

Payables And Accruals, Payment Arrangement Period

+ References

No definition available.

+ Details

Name:	sgmo_PayablesAndAccrualsPaymentArrangementPeriod
Namespace Prefix:	sgmo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Definition

Prepaid Reservation Fees For Contract Manufacturing

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No definition available.

+ Details

Name:	sgmo_PrepaidReservationFeesForContractManufacturing
Namespace Prefix:	sgmo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_PayablesAndAccrualsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration