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CONTINGENCIES (Details 2) (Massachusetts Division of Banks, USD $)
9 Months Ended
Sep. 30, 2012
item
Dec. 31, 2011
Massachusetts Division of Banks
   
Contingencies    
Number of Joining Regulators 24  
Range of possible loss, minimum $ 500,000 $ 500,000
Range of possible loss, maximum 7,100,000 7,100,000
Amount of reserve for contingencies $ 500,000 $ 500,000