Deferred Compensation Plan For Non-Employee Directors (Details)	6 Months Ended
	Mar. 31, 2018 USD ($) shares
Deferred Compensation Plan For Directors [Line Items]
Shares issued out of treasury	31,838
Maximum [Member]
Deferred Compensation Plan For Directors [Line Items]
Period outside directors may elect to receive shares	10 years
Director [Member]
Deferred Compensation Plan For Directors [Line Items]
Decrease in deferred compensation | $	$ (811,219)
Class A Common Stock [Member]
Deferred Compensation Plan For Directors [Line Items]
New shares issued	32,599