v3.21.2

Loans receivable, net (Loans Receivable Maturity Due) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loans receivable, net |  |
2021 | $ 22,096 |
2022 | 532 |
2023 | 93 |
2024 | 93 |
2025 | 96 |
2026 and thereafter | 807 |
Total loans | $ 23,717 | $ 41,179

X
- Definition The amount represents loans receivable maturity due of after five years + References No definition available. + Details
Name: | sgoc_LoansReceivableMaturityDueAfterFiveYears
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represents loans receivable maturity due of four year + References No definition available. + Details
Name: | sgoc_LoansReceivableMaturityDueFiveYear
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represents loans receivable maturity due of four year + References No definition available. + Details
Name: | sgoc_LoansReceivableMaturityDueFourYear
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represents loans receivable maturity due of one year + References No definition available. + Details
Name: | sgoc_LoansReceivableMaturityDueOneYear
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represents loans receivable maturity due of three year + References No definition available. + Details
Name: | sgoc_LoansReceivableMaturityDueThreeYear
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represents loans receivable maturity due of two year + References No definition available. + Details
Name: | sgoc_LoansReceivableMaturityDueTwoYear
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represent notes and loans receivable total + References No definition available. + Details
Name: | sgoc_NotesAndLoansReceivableTotal
Namespace Prefix: | sgoc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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