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Derivative Instruments and Hedging Activities (Impact of Derivative Instruments on Earnings) (Details) - Derivatives in Cash Flow Hedging Relationships [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Amount of (Income) Expense Recognized in Earnings on Derivative $ (18) $ (18) $ (54) $ 39
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative 0 0 0 0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings $ (18) $ (18) $ (54) $ 39