Common Stock Repurchase (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Oct. 29, 2013
Common Stock Repurchase [Abstract]
Stock repurchase program, authorized amount			$ 20,000
Shares repurchased	1,734,421
Shares repurchased, value	15,802	14,058
Stock repurchase program, remaining amount	$ 4,198