Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Current:
Federal	$ 2	$ 235	$ 0
State	86	141	4
Foreign	2,902	1,120	1,020
Total current	2,990	1,496	1,024
Deferred:
Federal	7,596	5,470	(19,340)
State	12	95	(4,561)
Foreign	1,679	(549)	(4,461)
Total deferred	9,287	5,016	(28,362)
Total provision (benefit)	$ 12,277	$ 6,512	$ (27,338)