Earnings Per Share (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]
Net income	$ 1,528	$ 2,307	$ 3,758	$ 5,153
Denominator for basic net income per common share — weighted average shares outstanding	25,849,000	25,770,000	26,057,000	25,705,000
Effect of dilutive securities [Abstract]
Employee stock options and restricted stock units	265,000	273,000	266,000	433,000
Denominator for diluted net income per common share — adjusted weighted average shares	26,114,000	26,043,000	26,323,000	26,138,000
Net income per common share, basic	$ 0.06	$ 0.09	$ 0.14	$ 0.20
Net income per common share, diluted	$ 0.06	$ 0.09	$ 0.14	$ 0.20
Antidilutive securities excluded from computation of earnings per share	1,516,657	3,254,285	2,194,757	2,019,690