Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENT - Additional Information (Detail)

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FAIR VALUE MEASUREMENT - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Fair Value Measurements [Line Items]        
Loss on sale and write-downs of OREO     $ (62,000) $ 32,000
Fair Value, Measurements, Nonrecurring
       
Fair Value Measurements [Line Items]        
Impairment charges 809,000 1,508,000 3,700,000 3,135,000
Significant Unobservable Inputs (Level 3)
       
Fair Value Measurements [Line Items]        
Loss on sale and write-downs of OREO $ (366,000) $ (144,000) $ (483,000) $ (91,000)