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LOANS AND ALLOWANCE FOR PROBABLE LOAN LOSSES - Reserve for Unfunded Loan Commitments Activity (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Reserve For Unfunded Loan Commitments:      
Balance at beginning of period $ 26 $ 30 $ 5
Provision (reversal) for losses on unfunded loan commitments (21) (4) 25
Balance at end of period $ 5 $ 26 $ 30