Deferred Gain on Sale (Tables)  | 
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Business Combinations [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Deferred Gain On Sale | 
 
Deferred gain on sale consists of the following at September 30, 2018 and September 30, 2017:
 
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| Schedule of Contractual Obligation, Fiscal Year Maturity | 
 Estimated payments over the remaining term of the post-closing agreement arising out of the 2014 sale of property to Global Ag Properties, LLC are summarized in the following table. 
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- Definition Schedule Of Deferred Gain On Sale [Table Text Block] No definition available. 
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- Definition Schedule of Post-Closing Agreement, Contractual Obligation, Fiscal Year Maturity [Table Text Block] No definition available. 
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- References No definition available. 
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