Company's Derivatives on Consolidated Financial Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Foreign Currency Forward Contract | Other Income (Expense)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amount of (Loss) Gain Recognized in Income	$ 116	$ 925