Note 7 - Summary of Expired Director Plans (Details)	12 Months Ended
	Sep. 30, 2015 $ / shares shares
Exercise Price Range 1 [Member]
Range of exercise price, lower limit (in dollars per share)	$ 2.925
Outstanding Stock Options (in shares) | shares	5,000
Weighted Average Exercise Price (in dollars per share)	$ 2.925
Weighted Average Remaining Life	6 years 109 days
Number of Stock Options Exercisable (in shares) | shares	5,000
Weighted Average ExercisePrice (in dollars per share)	$ 2.925
Exercise Price Range 2 [Member]
Outstanding Stock Options (in shares) | shares	1,000
Weighted Average Exercise Price (in dollars per share)	$ 6
Weighted Average Remaining Life	4 years 182 days
Number of Stock Options Exercisable (in shares) | shares	1,000
Weighted Average ExercisePrice (in dollars per share)	$ 6
Range of exercise price, upper limit (in dollars per share)	$ 6
Outstanding Stock Options (in shares) | shares	6,000
Weighted Average Exercise Price (in dollars per share)	$ 3.44
Weighted Average Remaining Life
Number of Stock Options Exercisable (in shares) | shares	6,000
Weighted Average ExercisePrice (in dollars per share)	$ 3.44