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	9 Months Ended
	Sep. 30, 2013
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	$ 43,357
Less than 12 months Unrealized Loss	3,020
12 months or more Fair Value	2,180
12 months or more Unrealized Loss	227
Total Fair Value	45,537
Total Unrealized Loss	3,247
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	15,620
Less than 12 months Unrealized Loss	1,649
12 months or more Fair Value	259
12 months or more Unrealized Loss	42
Total Fair Value	15,879
Total Unrealized Loss	1,691
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	234
12 months or more Unrealized Loss	115
Total Fair Value	234
Total Unrealized Loss	115
Mortgage Backed
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	27,737
Less than 12 months Unrealized Loss	1,371
12 months or more Fair Value	1,687
12 months or more Unrealized Loss	70
Total Fair Value	29,424
Total Unrealized Loss	$ 1,441