Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Income Taxes [Line Items]
Effective tax rate	39.00%	(18.10%)	29.80%
U.S. Federal statutory rate	35.00%	35.00%	35.00%
Deferred taxes on undistributed earnings	$ 217
Undistributed earnings of foreign subsidiaries	0	13,085	14,262
Unrecognized tax benefits that would impact effective tax rate	1,840	1,362	1,083
Unrecognized tax benefits, related interest and penalties	375	431
Unrecognized tax benefits and related interest and penalties expected to reverse within the next 12 months	$ 981
Minimum [Member]
Income Taxes [Line Items]
Statute of limitations on state income tax returns	3 years
Statute of limitations on the examination of tax returns	2 years
Maximum [Member]
Income Taxes [Line Items]
Statute of limitations on state income tax returns	4 years
Statute of limitations on the examination of tax returns	6 years