Commodities Held by Broker (Details Narrative)	9 Months Ended	12 Months Ended
	Jul. 31, 2018 Integer lb $ / shares	Oct. 31, 2017 Integer lb $ / shares
Number of futures contracts | Integer	131	145
Purchase of futures contracts | lb	4,912,500	5,437,500
Futures contracts weighted average price per pound | $ / shares	$ 1.159	$ 1.31
Fair market value of futures contract per pound | $ / shares	$ 1.099	$ 1.25
Options [Member]
Number of futures contracts | Integer	0	0
Minimum [Member]
Futures contracts term	3 months	3 months
Maximum [Member]
Futures contracts term	4 months	4 months