v3.21.2

Quantitative and qualitative disclosure about market risk - Provision for account receivable, other receivable (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($)
Quantitative and qualitative disclosure about market risk |
Provisions for doubtful accounts | $ 39
Balance as of December 31 | $ 39

X
- Definition The amount of allowance for account receivable, other receivables and prepayments, deposit for acquisition of a subsidiary. + References No definition available. + Details
Name: | sgoc_AllowanceForAccountReceivableOtherReceivablesAndPrepaymentsDepositForAcquisition
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of allowance for account receivable, other receivables and prepayments, deposit for acquisition of a subsidiary, provision. + References No definition available. + Details
Name: | sgoc_AllowanceForAccountReceivableOtherReceivablesAndPrepaymentsDepositForAcquisitionProvision
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration