XML 55 R44.htm IDEA: XBRL DOCUMENT
v3.21.1

FAIR VALUE MEASUREMENTS, Change in Level 3 Fair Value of Warrant Liabilities (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Dec. 31, 2020
Unobservable Input Reconciliation [Roll Forward] |  |  |
Change in fair value of warrant liabilities | $ 181,000 | $ 181,000 | $ (7,240,000)
Warrant Liabilities [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Level 3 - Beginning balance |  | 0 | 0
Initial measurement on September 17, 2020 |  |  | 16,290,000
Change in fair value of warrant liabilities |  |  | 7,240,000
Level 3 - Ending balance |  |  | 0
Warrant Liabilities [Member] | Level 2 [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Transfer from Level 3 |  |  | (8,580,000)
Warrant Liabilities [Member] | Level 1 [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Transfer from Level 3 |  |  | (14,950,000)
Warrant Liabilities [Member] | Private Placement Warrants [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Level 3 - Beginning balance |  | 0 | 0
Initial measurement on September 17, 2020 |  |  | 5,940,000
Change in fair value of warrant liabilities |  |  | 2,640,000
Level 3 - Ending balance |  |  | 0
Warrant Liabilities [Member] | Private Placement Warrants [Member] | Level 2 [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Transfer from Level 3 |  |  | (8,580,000)
Warrant Liabilities [Member] | Private Placement Warrants [Member] | Level 1 [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Transfer from Level 3 |  |  | 0
Warrant Liabilities [Member] | Public Warrants [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Level 3 - Beginning balance |  | $ 0 | 0
Initial measurement on September 17, 2020 |  |  | 10,350,000
Change in fair value of warrant liabilities |  |  | 4,600,000
Level 3 - Ending balance |  |  | 0
Warrant Liabilities [Member] | Public Warrants [Member] | Level 2 [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Transfer from Level 3 |  |  | 0
Warrant Liabilities [Member] | Public Warrants [Member] | Level 1 [Member] |  |  |
Unobservable Input Reconciliation [Roll Forward] |  |  |
Transfer from Level 3 |  |  | $ (14,950,000)

X
- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sbg_PrivatePlacementWarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sbg_PublicWarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |