Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Current:
Federal	$ 2,710	$ 2	$ 235
State	124	86	141
Foreign	4,565	2,902	1,120
Total current	7,399	2,990	1,496
Deferred:
Federal	1,091	7,596	5,470
State	933	12	95
Foreign	215	1,679	(549)
Total deferred	2,239	9,287	5,016
Total provision	$ 9,638	$ 12,277	$ 6,512