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, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Weighted average common shares outstanding during the period - shares used for basic earnings per common share	9,549	9,382	9,511	9,341
Common shares issuable under share based payment plans which are potentially dilutive	76	100	81	117
Common shares used for diluted earnings per common share	9,625	9,482	9,592	9,458
Net income	$ 3,002	$ 2,684	$ 8,396	$ 6,451
Basic	$ 0.31	$ 0.29	$ 0.88	$ 0.69
Diluted	$ 0.31	$ 0.28	$ 0.88	$ 0.68