Note 11 - Concentrations (Details Textual) - Customer Concentration Risk [Member]	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Subscriptions and In-app Purchases Revenue on Social Bingo Sites [Member]
Number of Major Customers	0	0
Advertising Revenue [Member]
Number of Major Customers	1	1

Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

No definition available.

Name:	sgldf_NumberOfMajorCustomers
Namespace Prefix:	sgldf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration