5. INVESTMENT SECURITIES (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax			$ 2,190,000		$ 4,285,000
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax			876,000		2,857,000
Proceeds From Sales And Calls Of Available For Sale Securities	0	830,000	5,822,000	5,738,000
Available-for-sale Securities, Gross Realized Gains	$ 0	$ 11,000	$ 3,000	$ 75,000
Continuous Loss Position, Additional Information	At June 30, 2013, the Company held 216 securities of which 40 were in a loss position for less than twelve months and none were in a loss position for twelve months or more. Of the 40 securities in a loss position, 35 are mortgage-backed securities and five are obligations of states and political subdivisions. At December 31, 2012, the Company held 196 securities of which 16 were in a loss position for less than twelve months and none were in a loss position for twelve months or more. All 16 securities in a loss position were mortgage-backed securities.		At June 30, 2013, the Company held 216 securities of which 40 were in a loss position for less than twelve months and none were in a loss position for twelve months or more. Of the 40 securities in a loss position, 35 are mortgage-backed securities and five are obligations of states and political subdivisions. At December 31, 2012, the Company held 196 securities of which 16 were in a loss position for less than twelve months and none were in a loss position for twelve months or more. All 16 securities in a loss position were mortgage-backed securities.