Earnings Per Share of Common Stock (Detail) - Basic and diluted earnings per share computations - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income	$ 695	$ 1,257	$ 1,081	$ 2,043
Less: Net income attributable to nonvested common stock (in Dollars)	31	59	46	84
Net income attributable to common stockholders (in Dollars)	$ 664	$ 1,198	$ 1,035	$ 1,959
Weighted average total shares outstanding – basic	3,921	3,797	3,876	3,754
Less: weighted average non-vested shares outstanding	177	179	163	155
Weighted average number of common shares outstanding – basic	3,744	3,618	3,713	3,599
Potential common shares from non-vested stock awards and the assumed exercise of stock options	75	125	98	134
Weighted average common shares outstanding – diluted	3,819	3,743	3,811	3,733
Net income (loss) per share – basic (in Dollars per share)	$ 0.18	$ 0.33	$ 0.28	$ 0.54
Net income (loss) per share – diluted (in Dollars per share)	$ 0.17	$ 0.32	$ 0.27	$ 0.52