Quarterly report pursuant to sections 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) (USD $)
3 Months Ended 9 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Stockholders' Equity [Abstract]        
Number of shares authorized to be repurchased 350,000   350,000  
Remaining number of shares available for repurchase 260,728   260,728  
Shares        
Balance September 30, 2011     34,593  
Purchases     12,026  
Issuances     (18,923)  
Balance June 30, 2012 27,696   27,696  
Cost        
Balance September 30, 2011     $ 862,000  
Purchases     288,000  
Issuances     (490,000)  
Balance June 30, 2012 660,000   660,000  
Stock-based compensation expense $ 124,000 $ 115,000 $ 370,000 $ 339,000
Treasury shares issued     18,923  
Weighted average fair value     $ 25.91  
Shares eligible for grant 284,333   284,333  
Nonvested restricted shares 174,563   174,563