Derivative And Hedging Activities (Details 3) (USD $) In Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Interest rate-related instruments - customer and mirror [Member] | Capital market fees [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	$ (3,668)	$ (2,572)	$ (1,900)
Foreign currency exchange forwards [Member] | Capital market fees [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	(12)	(76)
Interest rate lock commitments (mortgage) [Member] | Mortgage banking [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	1,386	7,373
Forward commitments (mortgage) [Member] | Mortgage banking [Member]
Gain (loss) on derivative instruments not designated as hedging instruments
Gain / (Loss) Recognized in Income	$ (5,783)	$ (11,120)