Derivative Instruments and Hedging Strategies (Details 1) (Derivatives designated as hedging instruments [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Amounts affecting the Condensed Consolidated Statements of Operations
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives		$ (14)		$ (19)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	12	3	11	45
Revenue [Member] | Cash Flow Hedging [Member]
Amounts affecting the Condensed Consolidated Statements of Operations
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income		3		45
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Amounts affecting the Condensed Consolidated Statements of Operations
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives		(14)		(19)
Foreign Exchange Forward [Member] | Revenue [Member] | Cash Flow Hedging [Member]
Amounts affecting the Condensed Consolidated Statements of Operations
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	$ 12		$ 11