Derivatives and Hedging Activities (Details 2) - Fair Value Hedging [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Designated as Hedging Instrument [Member]
Asset Derivatives Fair Value	$ 835	$ 747
Liability Derivatives Fair Value	(1,043)	(3,442)
Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate and Foreign Exchange Products [Member]
Asset Derivatives Fair Value	835	747
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate and Foreign Exchange Products [Member]
Liability Derivatives Fair Value	(1,043)	(3,442)
Not Designated as Hedging Instrument [Member]
Asset Derivatives Fair Value	21
Liability Derivatives Fair Value	(3,503)	(4,450)
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate and Foreign Exchange Products [Member]
Asset Derivatives Fair Value	21
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate and Foreign Exchange Products [Member]
Liability Derivatives Fair Value	$ (3,503)	$ (4,450)