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FAIR VALUE - Gross Unrealized Losses and Fair Value Aggregated by Investment Category and Length of Time in Continuous Unrealized Loss Position (Detail) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]  
Less than 12 months Fair Value $ 46,069
Less than 12 months Unrealized Loss 2,388
12 months or more Fair Value 1,357
12 months or more Unrealized Loss 166
Total Fair Value 47,426
Total Unrealized Loss 2,554
Obligations of U.S. Govt Agencies
  
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]  
Less than 12 months Fair Value   
Less than 12 months Unrealized Loss   
12 months or more Fair Value   
12 months or more Unrealized Loss   
Total Fair Value   
Total Unrealized Loss   
State and Municipal
  
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]  
Less than 12 months Fair Value 14,478
Less than 12 months Unrealized Loss 1,315
12 months or more Fair Value 260
12 months or more Unrealized Loss 40
Total Fair Value 14,738
Total Unrealized Loss 1,355
Corporate Trust Preferred
  
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]  
Less than 12 months Fair Value   
Less than 12 months Unrealized Loss   
12 months or more Fair Value 247
12 months or more Unrealized Loss 102
Total Fair Value 247
Total Unrealized Loss 102
Mortgage Backed
  
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]  
Less than 12 months Fair Value 31,591
Less than 12 months Unrealized Loss 1,073
12 months or more Fair Value 850
12 months or more Unrealized Loss 24
Total Fair Value 32,441
Total Unrealized Loss $ 1,097