CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 23,943	$ 19,372	$ 22,988
Foreign currency translation adjustments	(33)	(16)	(18)
Change in fair value of interest rate swap, net of tax		90	490
Comprehensive income	$ 23,910	$ 19,446	$ 23,460