Stock Based Compensation Plans (Stock Option Activity Under The Plan) (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Number of Shares
Outstanding at beginning balance	234,232
Granted	0
Stock option exercise, shares	20,972
Forfeited or expired	0
Outstanding at ending balance	213,260	234,232
Exercisable at end of year	213,260
Weighted Average Exercise Price Per Share
Beginning Balance	$ 13.25
Granted	0
Exercise	13.25
Forfeited or expired	0
Ending Balance	13.25	$ 13.25
Exercisable at end of year	$ 13.25
Weighted Average Remaining Contractual Term (years)
Outstanding	4 years 10 months 24 days	5 years 7 months 6 days
Exercisable at end of year	4 years 10 months 24 days
Aggregate Intrinsic Value
Outstanding at beginning of year	$ 2,743
Exercised	250
Outstanding at end of year	3,519	$ 2,743
Exercisable at end of year	$ 3,519