Earnings Per Share Data - Basic and Diluted Earnings Per Share (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income	$ 266,000	$ 1,663,000	$ 354,000	$ 4,010,000
Common Shares:
Weighted average common shares outstanding	9,521,000	9,518,000	9,521,000	9,518,000
Effect of dilutive stock options	66,000	84,000	67,000	66,000
Diluted shares outstanding	9,587,000	9,602,000	9,588,000	9,584,000
Basic:
Net earnings per share	$ 0.03	$ 0.17	$ 0.04	$ 0.42
Diluted:
Net earnings per share	$ 0.03	$ 0.17	$ 0.04	$ 0.42