Note 9 - Income Taxes (Details Textual)	1 Months Ended
Nov. 14, 2017 CAD
Subsequent Event [Member] \| British Columbia Provincial Government [Member]
Proceeds from Tax Credit	CAD 39,919

Amount of cash inflow from the tax credit received.

No definition available.

Name:	sgldf_ProceedsFromTaxCredit
Namespace Prefix:	sgldf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration