Income Taxes (Income Tax Provision) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current federal	$ 2,203	$ 3,880	$ 3,072
Current state	400	342	327
Current foreign	3,131	2,479	1,835
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred U.S	(2,229)	(776)	(3,052)
Deferred foreign	(223)	(429)	(604)
Total income tax provision	$ 3,282	$ 5,496	$ 1,578