Derivative Instruments (Effect Of Cash Flow Hedges On Consolidated Statements Of Income) (Details) (Interest Rate Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative Effective Portion	$ (172)	$ 1,417	$ (811)	$ 101
Interest Income (Expense) [Member]
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from OCI into Income Effective Portion	248	1,872	744	4,461
Other Non-Interest Income [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income Ineffective Portion	$ 0	$ 0	$ 0	$ 0

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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