Supplemental Disclosure for Earnings Per Share (Earnings Per Share Information) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings:
Net income	$ 2,196	$ 1,456	$ 4,923	$ 4,020
Less: Preferred stock dividends declared	(43)	(43)	(129)	(129)
Net Income Available to Common Shareholders	$ 2,153	$ 1,413	$ 4,794	$ 3,891
Shares:
Weighted average common shares outstanding	2,149,931	2,092,938	2,133,557	2,130,599
Net income per common share, basic	$ 1.00	$ 0.68	$ 2.25	$ 1.83
Earnings:
Net income	$ 2,196	$ 1,456	$ 4,923	$ 4,020
Less: Preferred stock dividends declared	(43)	(43)	(129)	(129)
Net income available to common shareholders	$ 2,153	$ 1,413	$ 4,794	$ 3,891
Shares:
Weighted average common shares outstanding	2,149,931	2,092,938	2,133,557	2,130,599
Add: Dilutive effect of outstanding options	103,545	96,885	99,515	93,256
Add: Dilutive effect of nonvested restricted stock	5,694	11,500	7,850	13,338
Weighted average common shares outstanding as adjusted	2,259,170	2,201,323	2,240,922	2,237,193
Net income per common share, diluted	$ 0.95	$ 0.64	$ 2.14	$ 1.74