Other Assets: (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Other assets:
Intangible assets, net of accumulated amortization of $517,037 and $499,837 at September 30, 2015 and September 30, 2014	$ 83,200	$ 100,400
Other non-current assets	85,748	10,448
Total other assets	168,948	110,848
Accumulated amortization of intangible assets	517,037	499,837
Impairment charges	0	0	$ 0
Total intangible amortization expense	$ 17,000	$ 5,000	$ 100,000