Derivative And Hedging Activities Derivative Instruments Not Designated as Hedging Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014		Dec. 31, 2013
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Fair Value	$ 40,078		$ 42,980
Other Assets [Member] | Interest Rate Related Instruments Customer and Mirror [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	1,805,140		1,821,787
Fair Value	40,078		42,980
Receive Rate	1.59%	[1]	1.63%	[1]
Pay Rate	1.59%	[1]	1.63%	[1]
Maturity	3 years 8 months		3 years 9 months
Other Assets [Member] | Interest Rate Lock Commitments [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	131,294		102,225
Fair Value	791		416
Other Assets [Member] | Foreign Currency Exchange Forward [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	49,084		25,747
Fair Value	744		748
Other Assets [Member] | Purchased deposit option [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	114,716		115,953
Fair Value	7,490		7,328
Other Liabilities [Member] | Interest Rate Related Instruments Customer and Mirror [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	1,805,140		1,821,787
Fair Value	(42,843)		(45,815)
Receive Rate	1.59%	[1]	1.63%	[1]
Pay Rate	1.59%	[1]	1.63%	[1]
Maturity	3 years 8 months		3 years 9 months
Other Liabilities [Member] | Forward Commitments [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	148,750		135,000
Fair Value	512		1,301
Other Liabilities [Member] | Foreign Currency Exchange Forward [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	41,241		24,413
Fair Value	(607)		(655)
Other Liabilities [Member] | Written deposit option [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	114,716		115,953
Fair Value	$ (7,490)		$ (7,328)

[1] (1)Reflects the weighted average receive rate and pay rate for the interest rate swap derivative financial instruments only.