Derivative and Hedging Activities Derivative Impact on Perfomance (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Capital Market Fees [Member] | Interest Rate Related Instruments Customer and Mirror [Member]
Derivative Impact on Performance [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 108	$ (69)
Capital Market Fees [Member] | Foreign Exchange Forward [Member]
Derivative Impact on Performance [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	70	9
Capital Market Fees [Member] | Commodity Contract [Member]
Derivative Impact on Performance [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(886)	198
Mortgage Banking [Member] | Interest Rate Lock Commitments [Member]
Derivative Impact on Performance [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	1,749	2,474
Mortgage Banking [Member] | Forward Contracts [Member]
Derivative Impact on Performance [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (606)	$ (2,749)