v3.21.2

Restatement (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Restatement
Financial statements in other receivables and prepayments and additional paid-in-capital	$ 861	$ 1,461

X

- Definition

The amount of over statement in other receivables and prepayments and additional paid-in-capital.

+ References

No definition available.

+ Details

Name:	sgoc_AmountOfOverstatementInOtherReceivablesAndPrepaymentsAndAdditionalPaidInCapital
Namespace Prefix:	sgoc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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