Note 7 - Stock Options: (Detail) - Transactions involving the plans are summarized as follows: (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Employee Plans [Member]
Employee Plans:
Balance	26,850	41,500	59,400
Weighted Average Exercise Price (in Dollars per share)	$ 3.55	$ 3.41	$ 3.81
Balance	(26,850)	(14,650)	(17,900)
Weighted Average Exercise Price (in Dollars per share)	$ 3.55	$ 3.15	$ 4.73
Balance		26,850	41,500
Weighted Average Exercise Price (in Dollars per share)		$ 3.55	$ 3.41
Balance		26,850	41,500
Weighted Average Exercise Price (in Dollars per share)		$ 3.55	$ 3.41
Director Plans [Member]
Employee Plans:
Balance	38,000	44,000	41,000
Weighted Average Exercise Price (in Dollars per share)	$ 5.95	$ 6.30	$ 6.51
Balance	7,000	5,000	6,000
Weighted Average Exercise Price (in Dollars per share)	$ 2.925	$ 2.925	$ 6.00
Balance	(3,000)	(11,000)	(3,000)
Weighted Average Exercise Price (in Dollars per share)	$ 3.55	$ 5.98	$ 8.50
Balance	42,000	38,000	44,000
Weighted Average Exercise Price (in Dollars per share)	$ 5.62	$ 5.95	$ 6.30
Balance	30,000	28,334	33,000
Weighted Average Exercise Price (in Dollars per share)	$ 6.52	$ 6.62	$ 6.46