Earnings per Share (Tables) - Earnings per share computations (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Weighted average common shares outstanding during the period - shares used for basic earnings per common share	9,619	9,527	9,593	9,481
Common shares issuable under share based payment plans which are potentially dilutive	88	72	97	84
Common shares used for diluted earnings per common share	9,707	9,599	9,690	9,565
Net income	$ 1,703	$ 2,271	$ 4,044	$ 5,394
Basic	$ 0.18	$ 0.24	$ 0.42	$ 0.57
Diluted	$ 0.18	$ 0.24	$ 0.42	$ 0.56