Loans And Allowance For Loan Losses (Schedule Of Loans Previously Restructured And Have Subsequently Defaulted) (Detail) (USD $)	3 Months Ended
	Jun. 30, 2012 Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment
Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment