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SECURITIZATIONS (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
SECURITIZATIONS    
Unrealized gains recorded in AOCI $ 0 $ 22,740,000
Residential mortgage-backed securities | Quoted prices of similar instruments in active markets
   
SECURITIZATIONS    
Fair value 5,300,000 6,300,000
Unrealized gains recorded in AOCI $ 300,000 $ 400,000