Subsequent Event (Details) (USD $)	3 Months Ended				12 Months Ended			0 Months Ended
	Sep. 30, 2013	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Oct. 31, 2013 Subsequent Event	Jul. 25, 2012 Common Stock	Oct. 29, 2013 Common Stock Subsequent Event
Subsequent Event [Line Items]
Authorized amount under share repurchase program									$ 20,000,000	$ 20,000,000
Number of employees eliminated								40
Restructuring charge	$ 400,000	$ 1,000,000	$ 100,000	$ 200,000	$ 313,000	$ 1,259,000	$ 154,000	$ 200,000