Commitments And Contingencies (Summary Of Commitments) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Commitments And Contingencies [Line Items]
Commitments to extend credit	$ 14,030	$ 11,912
Commitments To Extend Credit [Member]
Commitments And Contingencies [Line Items]
Commitments to extend credit	13,633	11,612
Standby Letters Of Credit [Member]
Commitments And Contingencies [Line Items]
Commitments to extend credit	$ 397	$ 300