Derivatives and Hedging Activities (Details 2) - Fair Value Hedging [Member] - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Designated as Hedging Instrument [Member]
Asset Derivatives Fair Value	$ 639	$ 747
Liability Derivatives Fair Value	(3,173)	(3,442)
Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate and Foreign Exchange Products [Member]
Asset Derivatives Fair Value	639	747
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate and Foreign Exchange Products [Member]
Liability Derivatives Fair Value	(3,173)	(3,442)
Not Designated as Hedging Instrument [Member]
Asset Derivatives Fair Value	51
Liability Derivatives Fair Value	(2,415)	(4,450)
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate and Foreign Exchange Products [Member]
Asset Derivatives Fair Value	51
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate and Foreign Exchange Products [Member]
Liability Derivatives Fair Value	$ (2,415)	$ (4,450)