6. IMPAIRED AND NONPERFORMING LOANS AND LEASES AND OTHER REAL ESTATE OWNED (Detail) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Financing Receivable Recorded Investment Nonperforming	$ 6,777,000				$ 6,777,000		$ 13,423,000
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	6,777,000				6,777,000
Loan and Leases Receivable, Performing loan and leases	21,666,000				21,666,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	129,000			398,000	601,000	1,288,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	13,681,000				13,681,000		8,190,000
Other Real Estate		212,000					55,000
Transfer to Other Real Estate		244,000	3,439,000
Real Estate Write Down Or Reserve Amount Minimum			194,000
RealEstateWriteDownOrReserveAmountMaximum			3,245,000
Cost of Real Estate Sales	576,000	406,000	497,000
Gains (Losses) on Sales of Other Real Estate	12,000	39,000	30,000		1,224,000	449,000
Allowance for Loan and Lease Losses, Write-offs			74,000
Foreclosed Real Estate Expense			60,000
Payments to Acquire Other Real Estate	3,900,000
Total [ Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	3,138,000				3,138,000
Other Real Estate	13,681,000				13,681,000
Commercial Real Estate [Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	805,000				805,000
Other Real Estate	8,547,000				8,547,000
Commercial Land Properties [Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	1,200,000				1,200,000
Other Real Estate	1,464,000				1,464,000
Single family residence Member
Other Real Estate, Foreclosed Assets, and Repossessed Assets	1,127,000				1,127,000
Single Family Residence B Member
Other Real Estate, Foreclosed Assets, and Repossessed Assets	308,000				308,000
Commercial Retail [Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	439,000				439,000
Residential Land Properties [Member]
Other Real Estate	1,804,000				1,804,000
Residential Real Estate [Member]
Other Real Estate	1,866,000				1,866,000
Total [ Member]
Impaired Financing Receivable, Recorded Investment	28,443,000				28,443,000		30,085,000
Impaired Financing Receivable, Related Allowance	1,459,000				1,459,000		1,680,000
Valuation A Member
Valuation Allowances and Reserves, Period Increase (Decrease)	272,000
Valuation B Member
Valuation Allowances and Reserves, Period Increase (Decrease)	248,000
Total [ Member]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	14,095,000				14,095,000		8,139,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment	14,348,000				14,348,000		21,946,000
Impaired Financing Receivable, Related Allowance	1,459,000				1,459,000		1,680,000
Allowance for Loan and Lease Losses [Member]
Impaired Financing Receivable, Related Allowance	$ 1,459,000				$ 1,459,000		$ 1,680,000