Quarterly report pursuant to sections 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Stockholders' Equity [Abstract]        
Number of shares authorized to be repurchased 350,000   350,000  
Shares        
Balance September 30, 2012     23,235  
Purchases     73,768  
Issuances to Directors     (9,710)  
Balance March 31, 2013 87,293   87,293  
Cost        
Balance September 30, 2012     $ 543  
Purchases     2,810  
Issuances to Directors     (221)  
Balance March 31, 2013 3,132   3,132  
Number of shares repurchased under plan 163,376   163,376  
Remaining number of shares available for repurchase 186,624   186,624  
Stock-based compensation expense $ 174 $ 125 $ 315 $ 246