Derivative And Hedging Activities Gains and Losses on Derivative Instruments Not Designated at Hedging Instruments (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Interest Rate Lock Commitments [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	$ 1,634	$ (12,945)
Forward Contracts [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	(2,959)	20,460
Capital Market Fees [Member] | Interest Rate Related Instruments Customer and Mirror [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	(9)	2,799
Capital Market Fees [Member] | Foreign Exchange Forward [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	$ 70	$ (33)