7. TROUBLED DEBT RESTRUCTURINGS (Detail) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable, Modifications, Recorded Investment	$ 16,296,000	$ 16,296,000
Financing Receivable Recorded Investment Nonperforming	6,777,000	6,777,000	13,423,000
Loans And Leases Receivable Impaired Troubled Debt Restructuring Nonperforming Amount		2,449,000
Loans And Leases Receivable Impaired Troubled Debt Restructuring Allowance For Loan Losses		519,000	535,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	146,000	329,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 38,000	$ 151,000