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Commitments And Contingent Liabilities (Schedule Of Contractual Amounts Of Commitments And Contingent Liabilities) (Details) (USD $) In Thousands, unless otherwise specified									9 Months Ended
	Sep. 30, 2012 Commitments To Originate Loans [Member]	Dec. 31, 2011 Commitments To Originate Loans [Member]	Sep. 30, 2012 Unused Lines Of Credit [Member]	Dec. 31, 2011 Unused Lines Of Credit [Member]	Sep. 30, 2012 Un-Advanced Portions Of Construction Loans [Member]	Dec. 31, 2011 Un-Advanced Portions Of Construction Loans [Member]	Sep. 30, 2012 Standby Letters Of Credit [Member]	Dec. 31, 2011 Standby Letters Of Credit [Member]	Sep. 30, 2012 Maximum [Member]
Long-term Purchase Commitment [Line Items]
Contractual amount of commitment and contingent liability	$ 56,106	$ 23,220	$ 102,851	$ 88,208	$ 12,108	$ 4,986	$ 442	$ 350
Standby letters of credit terms, in years									5 years

Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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