Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Investment Securities Continuous Unrealized Loss Position) (Detail)

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SECURITIES (Investment Securities Continuous Unrealized Loss Position) (Detail) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]    
Less Than Twelve Months, Gross Unrealized Losses $ (1,888) $ (162)
Less Than Twelve Months, Gross Unrealized Losses Fair value 64,430 18,122
Twelve Months or More, Gross Unrealized Losses (2) 0
Twelve Months or More, Gross Unrealized Losses Fair value 175 166
Total, Gross Unrealized Losses (1,890) (162)
Total, Gross Unrealized Losses Fair value 64,605 18,288
US Treasury and Government [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Less Than Twelve Months, Gross Unrealized Losses 0  
Less Than Twelve Months, Gross Unrealized Losses Fair value 0  
Twelve Months or More, Gross Unrealized Losses 0  
Twelve Months or More, Gross Unrealized Losses Fair value 0  
Total, Gross Unrealized Losses 0  
Total, Gross Unrealized Losses Fair value 0  
Collateralized Mortgage Backed Securities [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Less Than Twelve Months, Gross Unrealized Losses (1,140) (40)
Less Than Twelve Months, Gross Unrealized Losses Fair value 25,668 4,439
Twelve Months or More, Gross Unrealized Losses 0 0
Twelve Months or More, Gross Unrealized Losses Fair value 0 0
Total, Gross Unrealized Losses (1,140) (40)
Total, Gross Unrealized Losses Fair value 25,668 4,439
US States and Political Subdivisions Debt Securities [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Less Than Twelve Months, Gross Unrealized Losses (723) (83)
Less Than Twelve Months, Gross Unrealized Losses Fair value 32,803 8,801
Twelve Months or More, Gross Unrealized Losses (2) 0
Twelve Months or More, Gross Unrealized Losses Fair value 175 166
Total, Gross Unrealized Losses (725) (83)
Total, Gross Unrealized Losses Fair value 32,978 8,967
Corporate Debt Securities [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Less Than Twelve Months, Gross Unrealized Losses (25) (39)
Less Than Twelve Months, Gross Unrealized Losses Fair value 5,959 4,882
Twelve Months or More, Gross Unrealized Losses 0 0
Twelve Months or More, Gross Unrealized Losses Fair value 0 0
Total, Gross Unrealized Losses (25) (39)
Total, Gross Unrealized Losses Fair value $ 5,959 $ 4,882