Note 9 - Employee Benefits (Detail) - Stock Options Outstanding (USD $)	3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012
Number outstanding at December 31, 2012	559,025	559,025
Weighted average remaining contractual life in years	8 years
Exercise price per share (in Dollars per share)	$ 10.54	$ 10.54
Exercise Price 11.00 [Member]
Number outstanding at December 31, 2012	337,525
Weighted average remaining contractual life in years	6 years
Exercise price per share (in Dollars per share)	$ 11.00
Exercise Price 10.20 [Member]
Number outstanding at December 31, 2012	150,000
Weighted average remaining contractual life in years	8 years
Exercise price per share (in Dollars per share)	$ 10.20
Exercise Price 9.00 [Member]
Number outstanding at December 31, 2012	54,500
Weighted average remaining contractual life in years	8 years
Exercise price per share (in Dollars per share)	$ 9.00
Exercise Price 9.15 [Member]
Number outstanding at December 31, 2012	13,000
Weighted average remaining contractual life in years	9 years
Exercise price per share (in Dollars per share)	$ 9.15
Exercise Price 9.72 [Member]
Number outstanding at December 31, 2012	4,000
Weighted average remaining contractual life in years	9 years
Exercise price per share (in Dollars per share)	$ 9.72