7. TROUBLED DEBT RESTRUCTURINGS (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Troubled Debt Restructuring Note, Debtor [Abstract]
Financing Receivable, Modifications, Recorded Investment	$ 7,300,000
Financing Receivable Recorded Investment Nonperforming	4,811,000		5,474,000
Loans And Leases Receivable Impaired Troubled Debt Restructuring Nonperforming Amount	2,322,000
Loans And Leases Receivable Impaired Troubled Debt Restructuring Allowance For Loan Losses	1,160,000		1,575,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	50,000	40,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down		$ 113,000