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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, 2018
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Outstanding, number of shares 9,376 23,626
Outstanding, weighted average exercise price (in Dollars per share) $ 4.49 $ 5.76
Granted, number of shares 0 0
Granted, weighted average exercise price (in Dollars per share) $ 0.00 $ 0.00
Expired, number of shares (1,250) (9,250)
Expired, weighted average exercise price (in Dollars per share) $ 6.82 $ 9.30
Forfeited, number of shares 0 0
Forfeited, weighted average exercise price (in Dollars per share) $ 0.00 $ 0.00
Exercised, number of shares (4,626) (5,000)
Exercised, weighted average exercise price (in Dollars per share) $ 4.67 $ 2.99
Outstanding, number of shares 3,500 9,376
Outstanding, weighted average exercise price (in Dollars per share) $ 3.42 $ 4.49
Outstanding, weighted average remaining contractual term 1 year 84 days  
Outstanding, aggregate intrinsic value (in Dollars) $ 34  
Exercisable at September 30, 2018 3,500  
Exercisable at September 30, 2013 (in Dollars per share) $ 3.42  
Exercisable at September 30, 2018 1 year 84 days  
Exercisable at September 30, 2013 (in Dollars) $ 34  
Vested and expected to vest at September 30, 2018 3,500  
Vested and expected to vest at September 30, 2013 (in Dollars per share) $ 3.42  
Vested and expected to vest at September 30, 2018 1 year 84 days  
Vested and expected to vest at September 30, 2013 (in Dollars) $ 34