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Stock Options and Awards (Detail) - Summary data of stock option award activity - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Outstanding, number of shares 55,126 92,126
Outstanding, weighted average exercise price (in Dollars per share) $ 6.43 $ 7.66
Granted, number of shares 0 0
Granted, weighted average exercise price (in Dollars per share) $ 0.00 $ 0.00
Expired, number of shares (17,500) (35,125)
Expired, weighted average exercise price (in Dollars per share) $ 6.61 $ 9.72
Forfeited, number of shares 0 0
Forfeited, weighted average exercise price (in Dollars per share) $ 0.00 $ 0.00
Exercised, number of shares (14,000) (1,875)
Exercised, weighted average exercise price (in Dollars per share) $ 6.20 $ 5.26
Outstanding, number of shares 23,626 55,126
Outstanding, weighted average exercise price (in Dollars per share) $ 5.76 $ 6.43
Outstanding, weighted average remaining contractual term 1 year 194 days  
Outstanding, aggregate intrinsic value (in Dollars) $ 106  
Exercisable at September 30, 2016 23,626  
Exercisable at September 30, 2013 (in Dollars per share) $ 5.76  
Exercisable at September 30, 2016 1 year 194 days  
Exercisable at September 30, 2013 (in Dollars) $ 106  
Vested and expected to vest at September 30, 2016 23,626  
Vested and expected to vest at September 30, 2013 (in Dollars per share) $ 5.76  
Vested and expected to vest at September 30, 2016 1 year 194 days  
Vested and expected to vest at September 30, 2013 (in Dollars) $ 106