EXPENSES (Details)	12 Months Ended
Dec. 31, 2017 USD ($)
EXPENSES
Annual contractual payments to Cargill to arrange for the delivery of the corn and other agency services	$ 92,000

Represents annual contractual payments for the procurement of corn and other agency services.

No definition available.

Name:	ggrou_AnnualPaymentsForProcurementOfCornAndOtherAgencyServices
Namespace Prefix:	ggrou_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration