XML 62 R49.htm IDEA: XBRL DOCUMENT
v3.21.2

ACQUISITION OF SANGAMO THERAPEUTICS FRANCE S.A.S. - Narrative (Detail) - Sangamo France - USD ($) $ / shares in Units, shares in Thousands | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2018 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2018 | Oct. 01, 2018 | Jul. 20, 2018
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration transferred | $ 45,900,000 |  |  |  |  |
Goodwill impairments |  | $ 0 | $ 0 |  |  |
Business acquisition, share price (in dollars per share) |  |  |  |  | $ 2.99 |
Share purchase agreement and tender offer agreement |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of equity interests agreed to acquire |  | 100.00% |  | 100.00% |  |
Number of free shares held by the holders (in shares) |  |  |  | 477 |  | 477
Number of ordinary shares acquired (in shares) |  | 477 |  |  |  |

X
- Definition Business acquisition, number of free shares held by the holders. + References No definition available. + Details
Name: | sgmo_BusinessAcquisitionNumberOfFreeSharesHeldByHolders
Namespace Prefix: | sgmo_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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 Business acquisition, percentage of equity interests agreed to acquire. + References No definition available. + Details
Name: | sgmo_BusinessAcquisitionPercentageOfEquityInterestsAgreedToAcquire
Namespace Prefix: | sgmo_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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: |