Note 9 - Commitments - Minimum Guarantee Payments Under Renewable License Commitments (Details)	Dec. 31, 2018 USD ($)
2019	$ 26,364
2020	3,000
2021

Represents the minimum guarantee payments under renewable license commitments required to be paid in the third fiscal year following the latest fiscal year.

No definition available.

Name:	sgldf_MinimumGuaranteePaymentsUnderRenewableLicenseCommitmentsYearThree
Namespace Prefix:	sgldf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant