Derivatives (Summary Of Derivative Contracts) (Details) - USD ($)		Mar. 31, 2017	Sep. 30, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Gross amounts recognized - Current Assets	[1]	$ 516,889	$ 68,235
Offsetting adjustments - Current Assets	[1]	(516,889)	(68,235)
Gross amounts recognized - Current Liabilities	[1]	560,594	471,847
Offsetting adjustments - Current Liabilities	[1]	(516,889)	(68,235)
Derivative contracts, net	[1]	$ 43,705	403,612
Gross amounts recognized - Non-Current Assets	[1]		4,759
Offsetting adjustments - Non-Current Assets	[1]		(4,759)
Gross amounts recognized - Non-Current Liabilities	[1]		29,418
Offsetting adjustments - Non-Current Liabilities	[1]		(4,759)
Derivative contracts, net	[1]		$ 24,659

[1] See Fair Value Measurements section for further disclosures regarding fair value of financial instruments