Note 7 - Stock Options: (Details) - Summary of the range of exercise prices for stock options outstanding and exercisable Directors Plans: (USD $)	12 Months Ended
	Sep. 30, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding Stock Options (in Shares)	31,000
Weighted Average Exercise Price	$ 5.57
Number of Stock Options Exercisable (in Shares)	25,000
Weighted Average Exercise Price	$ 6.20
Price Range $2.925 To $5.25 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price - Min	$ 2.925
Exercise Price - Max	$ 5.25
Outstanding Stock Options (in Shares)	17,000
Weighted Average Exercise Price	$ 3.34
Weighted Average Remaining Life	6 years 255 days
Number of Stock Options Exercisable (in Shares)	11,000
Weighted Average Exercise Price	$ 3.56
Price Range $6.00 To $7.25 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price - Min	$ 6.00
Exercise Price - Max	$ 7.25
Outstanding Stock Options (in Shares)	8,000
Weighted Average Exercise Price	$ 6.43
Weighted Average Remaining Life	3 years 292 days
Number of Stock Options Exercisable (in Shares)	8,000
Weighted Average Exercise Price	$ 6.43
Price Range $10.50 To $11.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price - Min	$ 10.50
Exercise Price - Max	$ 11.00
Outstanding Stock Options (in Shares)	6,000
Weighted Average Exercise Price	$ 10.75
Weighted Average Remaining Life	4 years
Number of Stock Options Exercisable (in Shares)	6,000
Weighted Average Exercise Price	$ 10.75