Foreign Currency Forward Contracts (Details) - Selling, General and Administrative Expenses - Not Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Foreign currency balance sheet hedging
Foreign currency net gain (loss)	$ (268)	$ (290)	$ (637)	$ (342)
Foreign Currency Transaction
Foreign currency balance sheet hedging
Foreign currency net gain (loss)	(70)	479	(417)	726
Foreign Exchange Forward
Foreign currency balance sheet hedging
Foreign currency net gain (loss)	$ (198)	$ (769)	$ (220)	$ (1,068)

Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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