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Earnings per Share (Tables) - Earnings per share computations (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Earnings Per Share [Abstract]        
Weighted average common shares outstanding during the period - shares used for basic earnings per common share 9,651 9,549 9,613 9,511
Common shares issuable under share based payment plans which are potentially dilutive 67 76 87 81
Common shares used for diluted earnings per common share 9,718 9,625 9,700 9,592
Net income $ 3,485 $ 3,002 $ 7,529 $ 8,396
Basic $ 0.36 $ 0.31 $ 0.78 $ 0.88
Diluted $ 0.36 $ 0.31 $ 0.78 $ 0.88