XML 44 R36.htm IDEA: XBRL DOCUMENT v2.4.0.6

Inventory Narrative (Details) (USD $)	12 Months Ended
Inventory Narrative (Details) (USD $)	Oct. 31, 2012
Lower of Cost of Market Adjustment	$ 77,000

X

- Definition

Lower of Cost of Market Adjustment

+ References

No definition available.

+ Details

Name:	gfe_LowerOfCostOfMarketAdjustment
Namespace Prefix:	gfe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration