Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator:
Net income	$ 4,894	$ 7,049	$ 10,002	$ 3,127
Denominator:
Weighted average basic shares	11,397	11,802	11,387	11,953
Dilutive effect of restricted stock units	76	43	48	38
Weighted average diluted shares with assumed conversions	11,473	11,845	11,435	11,991
Net income per share:
Basic	$ 0.43	$ 0.60	$ 0.88	$ 0.26
Diluted	$ 0.43	$ 0.60	$ 0.87	$ 0.26