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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, 2017
Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Outstanding, number of shares 23,626 55,126
Outstanding, weighted average exercise price (in Dollars per share) $ 5.76 $ 6.43
Granted, number of shares 0 0
Granted, weighted average exercise price (in Dollars per share) $ 0.00 $ 0.00
Expired, number of shares (9,250) (17,500)
Expired, weighted average exercise price (in Dollars per share) $ 9.30 $ 6.61
Forfeited, number of shares 0 0
Forfeited, weighted average exercise price (in Dollars per share) $ 0.00 $ 0.00
Exercised, number of shares (5,000) (14,000)
Exercised, weighted average exercise price (in Dollars per share) $ 2.99 $ 6.20
Outstanding, number of shares 9,376 23,626
Outstanding, weighted average exercise price (in Dollars per share) $ 4.49 $ 5.76
Outstanding, weighted average remaining contractual term 1 year 129 days  
Outstanding, aggregate intrinsic value (in Dollars) $ 62  
Exercisable at September 30, 2017 9,376  
Exercisable at September 30, 2013 (in Dollars per share) $ 4.49  
Exercisable at September 30, 2017 1 year 129 days  
Exercisable at September 30, 2013 (in Dollars) $ 62  
Vested and expected to vest at September 30, 2017 9,376  
Vested and expected to vest at September 30, 2013 (in Dollars per share) $ 4.49  
Vested and expected to vest at September 30, 2017 1 year 129 days  
Vested and expected to vest at September 30, 2013 (in Dollars) $ 62