Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Current:
Federal	$ 235	$ 0	$ (207)
State	141	4	318
Foreign	1,120	1,020	1,043
Total current	1,496	1,024	1,154
Deferred:
Federal	5,470	(19,340)	0
State	95	(4,561)	0
Foreign	(549)	(4,461)	0
Total deferred	5,016	(28,362)	0
Total provision (benefit)	$ 6,512	$ (27,338)	$ 1,154