Nature of Operations and Summary of Significant Accounting Policies - Basic and Diluted Earning per Share (Detail) (USD $)	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net Income	$ (537,000)	$ 1,663,000	$ 1,901,000	$ 446,000	$ 2,235,000	$ 2,489,000	$ 2,977,000	$ (976,000)	$ 3,473,000	$ 6,725,000
Net Income Diluted									$ 3,473,000	$ 6,725,000
Weighted average common shares outstanding									9,518,000	9,518,000
Common Stock Equivalents									72,000	2,000
Diluted shares outstanding									9,590,000	9,520,000
Basic earnings per common share:
Basic earnings per share	$ (0.06)	$ 0.17	$ 0.20	$ 0.05	$ 0.24	$ 0.26	$ 0.31	$ (0.10)	$ 0.36	$ 0.71
Diluted earnings per common share:
Diluted earnings per share	$ (0.06)	$ 0.17	$ 0.20	$ 0.05	$ 0.24	$ 0.26	$ 0.31	$ (0.10)	$ 0.36	$ 0.71